7x+8=8x-20

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Solution for 7x+8=8x-20 equation:


Simplifying
7x + 8 = 8x + -20

Reorder the terms:
8 + 7x = 8x + -20

Reorder the terms:
8 + 7x = -20 + 8x

Solving
8 + 7x = -20 + 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.
8 + 7x + -8x = -20 + 8x + -8x

Combine like terms: 7x + -8x = -1x
8 + -1x = -20 + 8x + -8x

Combine like terms: 8x + -8x = 0
8 + -1x = -20 + 0
8 + -1x = -20

Add '-8' to each side of the equation.
8 + -8 + -1x = -20 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = -20 + -8
-1x = -20 + -8

Combine like terms: -20 + -8 = -28
-1x = -28

Divide each side by '-1'.
x = 28

Simplifying
x = 28

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