7-3(x-2)=7-x(4-4x)

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Solution for 7-3(x-2)=7-x(4-4x) equation:


Simplifying
7 + -3(x + -2) = 7 + -1x(4 + -4x)

Reorder the terms:
7 + -3(-2 + x) = 7 + -1x(4 + -4x)
7 + (-2 * -3 + x * -3) = 7 + -1x(4 + -4x)
7 + (6 + -3x) = 7 + -1x(4 + -4x)

Combine like terms: 7 + 6 = 13
13 + -3x = 7 + -1x(4 + -4x)
13 + -3x = 7 + (4 * -1x + -4x * -1x)
13 + -3x = 7 + (-4x + 4x2)

Solving
13 + -3x = 7 + -4x + 4x2

Solving for variable 'x'.

Reorder the terms:
13 + -7 + -3x + 4x + -4x2 = 7 + -4x + 4x2 + -7 + 4x + -4x2

Combine like terms: 13 + -7 = 6
6 + -3x + 4x + -4x2 = 7 + -4x + 4x2 + -7 + 4x + -4x2

Combine like terms: -3x + 4x = 1x
6 + 1x + -4x2 = 7 + -4x + 4x2 + -7 + 4x + -4x2

Reorder the terms:
6 + 1x + -4x2 = 7 + -7 + -4x + 4x + 4x2 + -4x2

Combine like terms: 7 + -7 = 0
6 + 1x + -4x2 = 0 + -4x + 4x + 4x2 + -4x2
6 + 1x + -4x2 = -4x + 4x + 4x2 + -4x2

Combine like terms: -4x + 4x = 0
6 + 1x + -4x2 = 0 + 4x2 + -4x2
6 + 1x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
6 + 1x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.5 + -0.25x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -0.25x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -0.25x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -0.25x + x2 = 0 + 1.5
-0.25x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
-0.25x + x2 = 1.5

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = 1.5 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = 1.5 + 0.015625

Combine like terms: 1.5 + 0.015625 = 1.515625
0.015625 + -0.25x + x2 = 1.515625

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = 1.515625

Calculate the square root of the right side: 1.231107225

Break this problem into two subproblems by setting 
(x + -0.125) equal to 1.231107225 and -1.231107225.

Subproblem 1

x + -0.125 = 1.231107225 Simplifying x + -0.125 = 1.231107225 Reorder the terms: -0.125 + x = 1.231107225 Solving -0.125 + x = 1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = 1.231107225 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = 1.231107225 + 0.125 x = 1.231107225 + 0.125 Combine like terms: 1.231107225 + 0.125 = 1.356107225 x = 1.356107225 Simplifying x = 1.356107225

Subproblem 2

x + -0.125 = -1.231107225 Simplifying x + -0.125 = -1.231107225 Reorder the terms: -0.125 + x = -1.231107225 Solving -0.125 + x = -1.231107225 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + x = -1.231107225 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + x = -1.231107225 + 0.125 x = -1.231107225 + 0.125 Combine like terms: -1.231107225 + 0.125 = -1.106107225 x = -1.106107225 Simplifying x = -1.106107225

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.356107225, -1.106107225}

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