3x+7-7x*12x=4x+9

Simple and best practice solution for 3x+7-7x*12x=4x+9 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 3x+7-7x*12x=4x+9 equation:


Simplifying
3x + 7 + -7x * 12x = 4x + 9

Reorder the terms for easier multiplication:
3x + 7 + -7 * 12x * x = 4x + 9

Multiply -7 * 12
3x + 7 + -84x * x = 4x + 9

Multiply x * x
3x + 7 + -84x2 = 4x + 9

Reorder the terms:
7 + 3x + -84x2 = 4x + 9

Reorder the terms:
7 + 3x + -84x2 = 9 + 4x

Solving
7 + 3x + -84x2 = 9 + 4x

Solving for variable 'x'.

Reorder the terms:
7 + -9 + 3x + -4x + -84x2 = 9 + 4x + -9 + -4x

Combine like terms: 7 + -9 = -2
-2 + 3x + -4x + -84x2 = 9 + 4x + -9 + -4x

Combine like terms: 3x + -4x = -1x
-2 + -1x + -84x2 = 9 + 4x + -9 + -4x

Reorder the terms:
-2 + -1x + -84x2 = 9 + -9 + 4x + -4x

Combine like terms: 9 + -9 = 0
-2 + -1x + -84x2 = 0 + 4x + -4x
-2 + -1x + -84x2 = 4x + -4x

Combine like terms: 4x + -4x = 0
-2 + -1x + -84x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(2 + x + 84x2) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(2 + x + 84x2)' equal to zero and attempt to solve: Simplifying 2 + x + 84x2 = 0 Solving 2 + x + 84x2 = 0 Begin completing the square. Divide all terms by 84 the coefficient of the squared term: Divide each side by '84'. 0.02380952381 + 0.01190476190x + x2 = 0 Move the constant term to the right: Add '-0.02380952381' to each side of the equation. 0.02380952381 + 0.01190476190x + -0.02380952381 + x2 = 0 + -0.02380952381 Reorder the terms: 0.02380952381 + -0.02380952381 + 0.01190476190x + x2 = 0 + -0.02380952381 Combine like terms: 0.02380952381 + -0.02380952381 = 0.00000000000 0.00000000000 + 0.01190476190x + x2 = 0 + -0.02380952381 0.01190476190x + x2 = 0 + -0.02380952381 Combine like terms: 0 + -0.02380952381 = -0.02380952381 0.01190476190x + x2 = -0.02380952381 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.01190476190x + 0.25 + x2 = -0.02380952381 + 0.25 Reorder the terms: 0.25 + 0.01190476190x + x2 = -0.02380952381 + 0.25 Combine like terms: -0.02380952381 + 0.25 = 0.22619047619 0.25 + 0.01190476190x + x2 = 0.22619047619 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 0.22619047619 Calculate the square root of the right side: 0.475594866 Break this problem into two subproblems by setting (x + 0.5) equal to 0.475594866 and -0.475594866.

Subproblem 1

x + 0.5 = 0.475594866 Simplifying x + 0.5 = 0.475594866 Reorder the terms: 0.5 + x = 0.475594866 Solving 0.5 + x = 0.475594866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.475594866 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.475594866 + -0.5 x = 0.475594866 + -0.5 Combine like terms: 0.475594866 + -0.5 = -0.024405134 x = -0.024405134 Simplifying x = -0.024405134

Subproblem 2

x + 0.5 = -0.475594866 Simplifying x + 0.5 = -0.475594866 Reorder the terms: 0.5 + x = -0.475594866 Solving 0.5 + x = -0.475594866 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.475594866 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.475594866 + -0.5 x = -0.475594866 + -0.5 Combine like terms: -0.475594866 + -0.5 = -0.975594866 x = -0.975594866 Simplifying x = -0.975594866

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.024405134, -0.975594866}

Solution

x = {-0.024405134, -0.975594866}

See similar equations:

| 25w^4-40w^2+u-16u^2=0 | | -6x^2+19x-10=0 | | 3+3/18(18/3) | | -9=8x-9/9 | | 16=9-h | | 3y-5=y+13 | | 22+-2x=20 | | 2x+4y=33 | | -69.716=-2.9(5.8+3.2v) | | 7/3(6x-3)=6/7(14x-21) | | 10y^3-55y^2-105y=0 | | 4n^2+7n= | | (m+14)/4=6 | | 16q^2=25 | | (2x-2)(2x+2)= | | 3-4m-5m=21 | | (7x-3)(2x+1)= | | 3t^3-7t^2-3t+7=0 | | 106=2x+(-5x-5) | | 4x+1=10x-8 | | 2m+2m=-16 | | -17*0+13y=48 | | 12n+3=n+10 | | 3r^3-192r=0 | | 8d-12=10d+4 | | -2=r-6-1 | | 4y+4=4x | | 18x^3-9x^2-14x=0 | | 9x=2x-3(8-x) | | m^2-10m+12=0 | | 20+2/10d=7/10d+16 | | 6+y=-6x |

Equations solver categories