-21-2=9-8x

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Solution for -21-2=9-8x equation:


Simplifying
-21 + -2 = 9 + -8x

Combine like terms: -21 + -2 = -23
-23 = 9 + -8x

Solving
-23 = 9 + -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.
-23 + 8x = 9 + -8x + 8x

Combine like terms: -8x + 8x = 0
-23 + 8x = 9 + 0
-23 + 8x = 9

Add '23' to each side of the equation.
-23 + 23 + 8x = 9 + 23

Combine like terms: -23 + 23 = 0
0 + 8x = 9 + 23
8x = 9 + 23

Combine like terms: 9 + 23 = 32
8x = 32

Divide each side by '8'.
x = 4

Simplifying
x = 4

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