69-4x=8x+21

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Solution for 69-4x=8x+21 equation:


Simplifying
69 + -4x = 8x + 21

Reorder the terms:
69 + -4x = 21 + 8x

Solving
69 + -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.
69 + -4x + -8x = 21 + 8x + -8x

Combine like terms: -4x + -8x = -12x
69 + -12x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
69 + -12x = 21 + 0
69 + -12x = 21

Add '-69' to each side of the equation.
69 + -69 + -12x = 21 + -69

Combine like terms: 69 + -69 = 0
0 + -12x = 21 + -69
-12x = 21 + -69

Combine like terms: 21 + -69 = -48
-12x = -48

Divide each side by '-12'.
x = 4

Simplifying
x = 4

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