x+9=2x-8

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


Simplifying
x + 9 = 2x + -8

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

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

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

Combine like terms: x + -2x = -1x
9 + -1x = -8 + 2x + -2x

Combine like terms: 2x + -2x = 0
9 + -1x = -8 + 0
9 + -1x = -8

Add '-9' to each side of the equation.
9 + -9 + -1x = -8 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -8 + -9
-1x = -8 + -9

Combine like terms: -8 + -9 = -17
-1x = -17

Divide each side by '-1'.
x = 17

Simplifying
x = 17

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