-64-8x=9x+21

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Solution for -64-8x=9x+21 equation:


Simplifying
-64 + -8x = 9x + 21

Reorder the terms:
-64 + -8x = 21 + 9x

Solving
-64 + -8x = 21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-64 + -8x + -9x = 21 + 9x + -9x

Combine like terms: -8x + -9x = -17x
-64 + -17x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
-64 + -17x = 21 + 0
-64 + -17x = 21

Add '64' to each side of the equation.
-64 + 64 + -17x = 21 + 64

Combine like terms: -64 + 64 = 0
0 + -17x = 21 + 64
-17x = 21 + 64

Combine like terms: 21 + 64 = 85
-17x = 85

Divide each side by '-17'.
x = -5

Simplifying
x = -5

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