-3(x+5)2x=-15-x

Simple and best practice solution for -3(x+5)2x=-15-x 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 -3(x+5)2x=-15-x equation:


Simplifying
-3(x + 5) * 2x = -15 + -1x

Reorder the terms:
-3(5 + x) * 2x = -15 + -1x

Reorder the terms for easier multiplication:
-3 * 2x(5 + x) = -15 + -1x

Multiply -3 * 2
-6x(5 + x) = -15 + -1x
(5 * -6x + x * -6x) = -15 + -1x
(-30x + -6x2) = -15 + -1x

Solving
-30x + -6x2 = -15 + -1x

Solving for variable 'x'.

Reorder the terms:
15 + -30x + x + -6x2 = -15 + -1x + 15 + x

Combine like terms: -30x + x = -29x
15 + -29x + -6x2 = -15 + -1x + 15 + x

Reorder the terms:
15 + -29x + -6x2 = -15 + 15 + -1x + x

Combine like terms: -15 + 15 = 0
15 + -29x + -6x2 = 0 + -1x + x
15 + -29x + -6x2 = -1x + x

Combine like terms: -1x + x = 0
15 + -29x + -6x2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
-2.5 + 4.833333333x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 4.833333333x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 4.833333333x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 4.833333333x + x2 = 0 + 2.5
4.833333333x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
4.833333333x + x2 = 2.5

The x term is 4.833333333x.  Take half its coefficient (2.416666667).
Square it (5.840277779) and add it to both sides.

Add '5.840277779' to each side of the equation.
4.833333333x + 5.840277779 + x2 = 2.5 + 5.840277779

Reorder the terms:
5.840277779 + 4.833333333x + x2 = 2.5 + 5.840277779

Combine like terms: 2.5 + 5.840277779 = 8.340277779
5.840277779 + 4.833333333x + x2 = 8.340277779

Factor a perfect square on the left side:
(x + 2.416666667)(x + 2.416666667) = 8.340277779

Calculate the square root of the right side: 2.887953909

Break this problem into two subproblems by setting 
(x + 2.416666667) equal to 2.887953909 and -2.887953909.

Subproblem 1

x + 2.416666667 = 2.887953909 Simplifying x + 2.416666667 = 2.887953909 Reorder the terms: 2.416666667 + x = 2.887953909 Solving 2.416666667 + x = 2.887953909 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.416666667' to each side of the equation. 2.416666667 + -2.416666667 + x = 2.887953909 + -2.416666667 Combine like terms: 2.416666667 + -2.416666667 = 0.000000000 0.000000000 + x = 2.887953909 + -2.416666667 x = 2.887953909 + -2.416666667 Combine like terms: 2.887953909 + -2.416666667 = 0.471287242 x = 0.471287242 Simplifying x = 0.471287242

Subproblem 2

x + 2.416666667 = -2.887953909 Simplifying x + 2.416666667 = -2.887953909 Reorder the terms: 2.416666667 + x = -2.887953909 Solving 2.416666667 + x = -2.887953909 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.416666667' to each side of the equation. 2.416666667 + -2.416666667 + x = -2.887953909 + -2.416666667 Combine like terms: 2.416666667 + -2.416666667 = 0.000000000 0.000000000 + x = -2.887953909 + -2.416666667 x = -2.887953909 + -2.416666667 Combine like terms: -2.887953909 + -2.416666667 = -5.304620576 x = -5.304620576 Simplifying x = -5.304620576

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.471287242, -5.304620576}

See similar equations:

| 15y-5=35 | | 6(c+3)-6=66 | | 2x+x+3=27 | | 4+0.5y=1.5 | | 7(6y)-3(2y)=48 | | (-4y-3)/(-6/y-4) | | X^4+4x^3+16x^2=0 | | x^4-4x^3+7x^2+6x+6=0 | | 6+0.5y=1.5 | | h=-4.9t^2+42t+20 | | -9+t=24 | | 3/d=7/9 | | 3x^3-45x^2+78x=0 | | -11c=4c-70 | | 20m-40-15m=20m+45 | | 12x=132+x | | 10y+15=12y+8+7-2y | | -25x^2-100x+100=125 | | (4/5n)-(1/10n^3) | | 5x+0.6=2x | | 4z+13+3z=2(5z-10) | | 3x-5x+8x=4x | | 5-8x=-7+1 | | 7-5/3 | | 3x/9=2/6 | | 5/7x-2=13 | | 3x/9=2(6) | | .3+4x=27 | | 77=-4+9j | | 3x=13/3 | | Y=4/3x-13 | | x^3+2x^2-2x=1000 |

Equations solver categories