6(5x+7)4x-10=7

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Solution for 6(5x+7)4x-10=7 equation:


Simplifying
6(5x + 7) * 4x + -10 = 7

Reorder the terms:
6(7 + 5x) * 4x + -10 = 7

Reorder the terms for easier multiplication:
6 * 4x(7 + 5x) + -10 = 7

Multiply 6 * 4
24x(7 + 5x) + -10 = 7
(7 * 24x + 5x * 24x) + -10 = 7
(168x + 120x2) + -10 = 7

Reorder the terms:
-10 + 168x + 120x2 = 7

Solving
-10 + 168x + 120x2 = 7

Solving for variable 'x'.

Reorder the terms:
-10 + -7 + 168x + 120x2 = 7 + -7

Combine like terms: -10 + -7 = -17
-17 + 168x + 120x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-17 + 168x + 120x2 = 0

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

Divide each side by '120'.
-0.1416666667 + 1.4x + x2 = 0.0

Move the constant term to the right:

Add '0.1416666667' to each side of the equation.
-0.1416666667 + 1.4x + 0.1416666667 + x2 = 0.0 + 0.1416666667

Reorder the terms:
-0.1416666667 + 0.1416666667 + 1.4x + x2 = 0.0 + 0.1416666667

Combine like terms: -0.1416666667 + 0.1416666667 = 0.0000000000
0.0000000000 + 1.4x + x2 = 0.0 + 0.1416666667
1.4x + x2 = 0.0 + 0.1416666667

Combine like terms: 0.0 + 0.1416666667 = 0.1416666667
1.4x + x2 = 0.1416666667

The x term is 1.4x.  Take half its coefficient (0.7).
Square it (0.49) and add it to both sides.

Add '0.49' to each side of the equation.
1.4x + 0.49 + x2 = 0.1416666667 + 0.49

Reorder the terms:
0.49 + 1.4x + x2 = 0.1416666667 + 0.49

Combine like terms: 0.1416666667 + 0.49 = 0.6316666667
0.49 + 1.4x + x2 = 0.6316666667

Factor a perfect square on the left side:
(x + 0.7)(x + 0.7) = 0.6316666667

Calculate the square root of the right side: 0.794774601

Break this problem into two subproblems by setting 
(x + 0.7) equal to 0.794774601 and -0.794774601.

Subproblem 1

x + 0.7 = 0.794774601 Simplifying x + 0.7 = 0.794774601 Reorder the terms: 0.7 + x = 0.794774601 Solving 0.7 + x = 0.794774601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = 0.794774601 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = 0.794774601 + -0.7 x = 0.794774601 + -0.7 Combine like terms: 0.794774601 + -0.7 = 0.094774601 x = 0.094774601 Simplifying x = 0.094774601

Subproblem 2

x + 0.7 = -0.794774601 Simplifying x + 0.7 = -0.794774601 Reorder the terms: 0.7 + x = -0.794774601 Solving 0.7 + x = -0.794774601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.7' to each side of the equation. 0.7 + -0.7 + x = -0.794774601 + -0.7 Combine like terms: 0.7 + -0.7 = 0.0 0.0 + x = -0.794774601 + -0.7 x = -0.794774601 + -0.7 Combine like terms: -0.794774601 + -0.7 = -1.494774601 x = -1.494774601 Simplifying x = -1.494774601

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.094774601, -1.494774601}

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