9x-8=-2x+21

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


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

Reorder the terms:
-8 + 9x = -2x + 21

Reorder the terms:
-8 + 9x = 21 + -2x

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

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-8 + 9x + 2x = 21 + -2x + 2x

Combine like terms: 9x + 2x = 11x
-8 + 11x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-8 + 11x = 21 + 0
-8 + 11x = 21

Add '8' to each side of the equation.
-8 + 8 + 11x = 21 + 8

Combine like terms: -8 + 8 = 0
0 + 11x = 21 + 8
11x = 21 + 8

Combine like terms: 21 + 8 = 29
11x = 29

Divide each side by '11'.
x = 2.636363636

Simplifying
x = 2.636363636

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