7[3-(-4x-3)]=140x+126

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Solution for 7[3-(-4x-3)]=140x+126 equation:


Simplifying
7[3 + -1(-4x + -3)] = 140x + 126

Reorder the terms:
7[3 + -1(-3 + -4x)] = 140x + 126
7[3 + (-3 * -1 + -4x * -1)] = 140x + 126
7[3 + (3 + 4x)] = 140x + 126

Combine like terms: 3 + 3 = 6
7[6 + 4x] = 140x + 126
[6 * 7 + 4x * 7] = 140x + 126
[42 + 28x] = 140x + 126

Reorder the terms:
42 + 28x = 126 + 140x

Solving
42 + 28x = 126 + 140x

Solving for variable 'x'.

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

Add '-140x' to each side of the equation.
42 + 28x + -140x = 126 + 140x + -140x

Combine like terms: 28x + -140x = -112x
42 + -112x = 126 + 140x + -140x

Combine like terms: 140x + -140x = 0
42 + -112x = 126 + 0
42 + -112x = 126

Add '-42' to each side of the equation.
42 + -42 + -112x = 126 + -42

Combine like terms: 42 + -42 = 0
0 + -112x = 126 + -42
-112x = 126 + -42

Combine like terms: 126 + -42 = 84
-112x = 84

Divide each side by '-112'.
x = -0.75

Simplifying
x = -0.75

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