7[9-(-4x-4)]=168x+231

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Solution for 7[9-(-4x-4)]=168x+231 equation:


Simplifying
7[9 + -1(-4x + -4)] = 168x + 231

Reorder the terms:
7[9 + -1(-4 + -4x)] = 168x + 231
7[9 + (-4 * -1 + -4x * -1)] = 168x + 231
7[9 + (4 + 4x)] = 168x + 231

Combine like terms: 9 + 4 = 13
7[13 + 4x] = 168x + 231
[13 * 7 + 4x * 7] = 168x + 231
[91 + 28x] = 168x + 231

Reorder the terms:
91 + 28x = 231 + 168x

Solving
91 + 28x = 231 + 168x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-168x' to each side of the equation.
91 + 28x + -168x = 231 + 168x + -168x

Combine like terms: 28x + -168x = -140x
91 + -140x = 231 + 168x + -168x

Combine like terms: 168x + -168x = 0
91 + -140x = 231 + 0
91 + -140x = 231

Add '-91' to each side of the equation.
91 + -91 + -140x = 231 + -91

Combine like terms: 91 + -91 = 0
0 + -140x = 231 + -91
-140x = 231 + -91

Combine like terms: 231 + -91 = 140
-140x = 140

Divide each side by '-140'.
x = -1

Simplifying
x = -1

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