8x+9=9(x-9)

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Solution for 8x+9=9(x-9) equation:


Simplifying
8x + 9 = 9(x + -9)

Reorder the terms:
9 + 8x = 9(x + -9)

Reorder the terms:
9 + 8x = 9(-9 + x)
9 + 8x = (-9 * 9 + x * 9)
9 + 8x = (-81 + 9x)

Solving
9 + 8x = -81 + 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.
9 + 8x + -9x = -81 + 9x + -9x

Combine like terms: 8x + -9x = -1x
9 + -1x = -81 + 9x + -9x

Combine like terms: 9x + -9x = 0
9 + -1x = -81 + 0
9 + -1x = -81

Add '-9' to each side of the equation.
9 + -9 + -1x = -81 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -81 + -9
-1x = -81 + -9

Combine like terms: -81 + -9 = -90
-1x = -90

Divide each side by '-1'.
x = 90

Simplifying
x = 90

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