9x+9-7x=8+8x+13

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Solution for 9x+9-7x=8+8x+13 equation:


Simplifying
9x + 9 + -7x = 8 + 8x + 13

Reorder the terms:
9 + 9x + -7x = 8 + 8x + 13

Combine like terms: 9x + -7x = 2x
9 + 2x = 8 + 8x + 13

Reorder the terms:
9 + 2x = 8 + 13 + 8x

Combine like terms: 8 + 13 = 21
9 + 2x = 21 + 8x

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

Combine like terms: 2x + -8x = -6x
9 + -6x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
9 + -6x = 21 + 0
9 + -6x = 21

Add '-9' to each side of the equation.
9 + -9 + -6x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -6x = 21 + -9
-6x = 21 + -9

Combine like terms: 21 + -9 = 12
-6x = 12

Divide each side by '-6'.
x = -2

Simplifying
x = -2

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