7x(x-11)-3x=-53

Simple and best practice solution for 7x(x-11)-3x=-53 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 7x(x-11)-3x=-53 equation:


Simplifying
7x(x + -11) + -3x = -53

Reorder the terms:
7x(-11 + x) + -3x = -53
(-11 * 7x + x * 7x) + -3x = -53
(-77x + 7x2) + -3x = -53

Reorder the terms:
-77x + -3x + 7x2 = -53

Combine like terms: -77x + -3x = -80x
-80x + 7x2 = -53

Solving
-80x + 7x2 = -53

Solving for variable 'x'.

Reorder the terms:
53 + -80x + 7x2 = -53 + 53

Combine like terms: -53 + 53 = 0
53 + -80x + 7x2 = 0

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

Divide each side by '7'.
7.571428571 + -11.42857143x + x2 = 0

Move the constant term to the right:

Add '-7.571428571' to each side of the equation.
7.571428571 + -11.42857143x + -7.571428571 + x2 = 0 + -7.571428571

Reorder the terms:
7.571428571 + -7.571428571 + -11.42857143x + x2 = 0 + -7.571428571

Combine like terms: 7.571428571 + -7.571428571 = 0.000000000
0.000000000 + -11.42857143x + x2 = 0 + -7.571428571
-11.42857143x + x2 = 0 + -7.571428571

Combine like terms: 0 + -7.571428571 = -7.571428571
-11.42857143x + x2 = -7.571428571

The x term is -11.42857143x.  Take half its coefficient (-5.714285715).
Square it (32.65306123) and add it to both sides.

Add '32.65306123' to each side of the equation.
-11.42857143x + 32.65306123 + x2 = -7.571428571 + 32.65306123

Reorder the terms:
32.65306123 + -11.42857143x + x2 = -7.571428571 + 32.65306123

Combine like terms: -7.571428571 + 32.65306123 = 25.081632659
32.65306123 + -11.42857143x + x2 = 25.081632659

Factor a perfect square on the left side:
(x + -5.714285715)(x + -5.714285715) = 25.081632659

Calculate the square root of the right side: 5.008156613

Break this problem into two subproblems by setting 
(x + -5.714285715) equal to 5.008156613 and -5.008156613.

Subproblem 1

x + -5.714285715 = 5.008156613 Simplifying x + -5.714285715 = 5.008156613 Reorder the terms: -5.714285715 + x = 5.008156613 Solving -5.714285715 + x = 5.008156613 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.714285715' to each side of the equation. -5.714285715 + 5.714285715 + x = 5.008156613 + 5.714285715 Combine like terms: -5.714285715 + 5.714285715 = 0.000000000 0.000000000 + x = 5.008156613 + 5.714285715 x = 5.008156613 + 5.714285715 Combine like terms: 5.008156613 + 5.714285715 = 10.722442328 x = 10.722442328 Simplifying x = 10.722442328

Subproblem 2

x + -5.714285715 = -5.008156613 Simplifying x + -5.714285715 = -5.008156613 Reorder the terms: -5.714285715 + x = -5.008156613 Solving -5.714285715 + x = -5.008156613 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.714285715' to each side of the equation. -5.714285715 + 5.714285715 + x = -5.008156613 + 5.714285715 Combine like terms: -5.714285715 + 5.714285715 = 0.000000000 0.000000000 + x = -5.008156613 + 5.714285715 x = -5.008156613 + 5.714285715 Combine like terms: -5.008156613 + 5.714285715 = 0.706129102 x = 0.706129102 Simplifying x = 0.706129102

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.722442328, 0.706129102}

See similar equations:

| -1=9(1-10) | | 13+7x=x+1 | | ln(10000/x) | | y=108 | | y=-5/2-2 | | x^255=5 | | 0.03/24 | | -36=p+-20 | | 78/9 | | 3x=12.5 | | 35u+49v= | | x^255=500 | | -6=-27+3x | | 1.6-0.6y=3.6 | | 3(x-4)-4(2x+3)=5x | | 2x+x+5= | | 8(x+3)=8(x+15) | | 18+29876= | | 75=-15x | | x^255=5000 | | 7x-2+3x=6x+16 | | -8n=-19 | | 4m-15=m | | S/10.5=42 | | 7+6(p+5)= | | 12xy+25=-35 | | 63=-8+9x | | 25+0.10x=40+0.05x | | x^2=(121x^2)/9 | | 5(4x-5)=55x | | -9=-15x | | 10n=-16 |

Equations solver categories