140=(3x+4)+(8x+4)

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Solution for 140=(3x+4)+(8x+4) equation:


Simplifying
140 = (3x + 4) + (8x + 4)

Reorder the terms:
140 = (4 + 3x) + (8x + 4)

Remove parenthesis around (4 + 3x)
140 = 4 + 3x + (8x + 4)

Reorder the terms:
140 = 4 + 3x + (4 + 8x)

Remove parenthesis around (4 + 8x)
140 = 4 + 3x + 4 + 8x

Reorder the terms:
140 = 4 + 4 + 3x + 8x

Combine like terms: 4 + 4 = 8
140 = 8 + 3x + 8x

Combine like terms: 3x + 8x = 11x
140 = 8 + 11x

Solving
140 = 8 + 11x

Solving for variable 'x'.

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

Add '-11x' to each side of the equation.
140 + -11x = 8 + 11x + -11x

Combine like terms: 11x + -11x = 0
140 + -11x = 8 + 0
140 + -11x = 8

Add '-140' to each side of the equation.
140 + -140 + -11x = 8 + -140

Combine like terms: 140 + -140 = 0
0 + -11x = 8 + -140
-11x = 8 + -140

Combine like terms: 8 + -140 = -132
-11x = -132

Divide each side by '-11'.
x = 12

Simplifying
x = 12

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