4x-8=21+8x

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Solution for 4x-8=21+8x equation:


Simplifying
4x + -8 = 21 + 8x

Reorder the terms:
-8 + 4x = 21 + 8x

Solving
-8 + 4x = 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.
-8 + 4x + -8x = 21 + 8x + -8x

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

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

Add '8' to each side of the equation.
-8 + 8 + -4x = 21 + 8

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

Combine like terms: 21 + 8 = 29
-4x = 29

Divide each side by '-4'.
x = -7.25

Simplifying
x = -7.25

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