-2(x-2)-7x=4(-2x-3)5x

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Solution for -2(x-2)-7x=4(-2x-3)5x equation:


Simplifying
-2(x + -2) + -7x = 4(-2x + -3) * 5x

Reorder the terms:
-2(-2 + x) + -7x = 4(-2x + -3) * 5x
(-2 * -2 + x * -2) + -7x = 4(-2x + -3) * 5x
(4 + -2x) + -7x = 4(-2x + -3) * 5x

Combine like terms: -2x + -7x = -9x
4 + -9x = 4(-2x + -3) * 5x

Reorder the terms:
4 + -9x = 4(-3 + -2x) * 5x

Reorder the terms for easier multiplication:
4 + -9x = 4 * 5x(-3 + -2x)

Multiply 4 * 5
4 + -9x = 20x(-3 + -2x)
4 + -9x = (-3 * 20x + -2x * 20x)
4 + -9x = (-60x + -40x2)

Solving
4 + -9x = -60x + -40x2

Solving for variable 'x'.

Combine like terms: -9x + 60x = 51x
4 + 51x + 40x2 = -60x + -40x2 + 60x + 40x2

Reorder the terms:
4 + 51x + 40x2 = -60x + 60x + -40x2 + 40x2

Combine like terms: -60x + 60x = 0
4 + 51x + 40x2 = 0 + -40x2 + 40x2
4 + 51x + 40x2 = -40x2 + 40x2

Combine like terms: -40x2 + 40x2 = 0
4 + 51x + 40x2 = 0

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

Divide each side by '40'.
0.1 + 1.275x + x2 = 0

Move the constant term to the right:

Add '-0.1' to each side of the equation.
0.1 + 1.275x + -0.1 + x2 = 0 + -0.1

Reorder the terms:
0.1 + -0.1 + 1.275x + x2 = 0 + -0.1

Combine like terms: 0.1 + -0.1 = 0.0
0.0 + 1.275x + x2 = 0 + -0.1
1.275x + x2 = 0 + -0.1

Combine like terms: 0 + -0.1 = -0.1
1.275x + x2 = -0.1

The x term is 1.275x.  Take half its coefficient (0.6375).
Square it (0.40640625) and add it to both sides.

Add '0.40640625' to each side of the equation.
1.275x + 0.40640625 + x2 = -0.1 + 0.40640625

Reorder the terms:
0.40640625 + 1.275x + x2 = -0.1 + 0.40640625

Combine like terms: -0.1 + 0.40640625 = 0.30640625
0.40640625 + 1.275x + x2 = 0.30640625

Factor a perfect square on the left side:
(x + 0.6375)(x + 0.6375) = 0.30640625

Calculate the square root of the right side: 0.553539746

Break this problem into two subproblems by setting 
(x + 0.6375) equal to 0.553539746 and -0.553539746.

Subproblem 1

x + 0.6375 = 0.553539746 Simplifying x + 0.6375 = 0.553539746 Reorder the terms: 0.6375 + x = 0.553539746 Solving 0.6375 + x = 0.553539746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6375' to each side of the equation. 0.6375 + -0.6375 + x = 0.553539746 + -0.6375 Combine like terms: 0.6375 + -0.6375 = 0.0000 0.0000 + x = 0.553539746 + -0.6375 x = 0.553539746 + -0.6375 Combine like terms: 0.553539746 + -0.6375 = -0.083960254 x = -0.083960254 Simplifying x = -0.083960254

Subproblem 2

x + 0.6375 = -0.553539746 Simplifying x + 0.6375 = -0.553539746 Reorder the terms: 0.6375 + x = -0.553539746 Solving 0.6375 + x = -0.553539746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6375' to each side of the equation. 0.6375 + -0.6375 + x = -0.553539746 + -0.6375 Combine like terms: 0.6375 + -0.6375 = 0.0000 0.0000 + x = -0.553539746 + -0.6375 x = -0.553539746 + -0.6375 Combine like terms: -0.553539746 + -0.6375 = -1.191039746 x = -1.191039746 Simplifying x = -1.191039746

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.083960254, -1.191039746}

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