86-5x=8x+21

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Solution for 86-5x=8x+21 equation:


Simplifying
86 + -5x = 8x + 21

Reorder the terms:
86 + -5x = 21 + 8x

Solving
86 + -5x = 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.
86 + -5x + -8x = 21 + 8x + -8x

Combine like terms: -5x + -8x = -13x
86 + -13x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
86 + -13x = 21 + 0
86 + -13x = 21

Add '-86' to each side of the equation.
86 + -86 + -13x = 21 + -86

Combine like terms: 86 + -86 = 0
0 + -13x = 21 + -86
-13x = 21 + -86

Combine like terms: 21 + -86 = -65
-13x = -65

Divide each side by '-13'.
x = 5

Simplifying
x = 5

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