7x+11+5x=8x-21

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Solution for 7x+11+5x=8x-21 equation:


Simplifying
7x + 11 + 5x = 8x + -21

Reorder the terms:
11 + 7x + 5x = 8x + -21

Combine like terms: 7x + 5x = 12x
11 + 12x = 8x + -21

Reorder the terms:
11 + 12x = -21 + 8x

Solving
11 + 12x = -21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
11 + 12x + -8x = -21 + 8x + -8x

Combine like terms: 12x + -8x = 4x
11 + 4x = -21 + 8x + -8x

Combine like terms: 8x + -8x = 0
11 + 4x = -21 + 0
11 + 4x = -21

Add '-11' to each side of the equation.
11 + -11 + 4x = -21 + -11

Combine like terms: 11 + -11 = 0
0 + 4x = -21 + -11
4x = -21 + -11

Combine like terms: -21 + -11 = -32
4x = -32

Divide each side by '4'.
x = -8

Simplifying
x = -8

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