8(x-9)=9(x-9)

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


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

Reorder the terms:
8(-9 + x) = 9(x + -9)
(-9 * 8 + x * 8) = 9(x + -9)
(-72 + 8x) = 9(x + -9)

Reorder the terms:
-72 + 8x = 9(-9 + x)
-72 + 8x = (-9 * 9 + x * 9)
-72 + 8x = (-81 + 9x)

Solving
-72 + 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.
-72 + 8x + -9x = -81 + 9x + -9x

Combine like terms: 8x + -9x = -1x
-72 + -1x = -81 + 9x + -9x

Combine like terms: 9x + -9x = 0
-72 + -1x = -81 + 0
-72 + -1x = -81

Add '72' to each side of the equation.
-72 + 72 + -1x = -81 + 72

Combine like terms: -72 + 72 = 0
0 + -1x = -81 + 72
-1x = -81 + 72

Combine like terms: -81 + 72 = -9
-1x = -9

Divide each side by '-1'.
x = 9

Simplifying
x = 9

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