8(x-9)-9(x-9)=x+8-(x-4)

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Solution for 8(x-9)-9(x-9)=x+8-(x-4) equation:


Simplifying
8(x + -9) + -9(x + -9) = x + 8 + -1(x + -4)

Reorder the terms:
8(-9 + x) + -9(x + -9) = x + 8 + -1(x + -4)
(-9 * 8 + x * 8) + -9(x + -9) = x + 8 + -1(x + -4)
(-72 + 8x) + -9(x + -9) = x + 8 + -1(x + -4)

Reorder the terms:
-72 + 8x + -9(-9 + x) = x + 8 + -1(x + -4)
-72 + 8x + (-9 * -9 + x * -9) = x + 8 + -1(x + -4)
-72 + 8x + (81 + -9x) = x + 8 + -1(x + -4)

Reorder the terms:
-72 + 81 + 8x + -9x = x + 8 + -1(x + -4)

Combine like terms: -72 + 81 = 9
9 + 8x + -9x = x + 8 + -1(x + -4)

Combine like terms: 8x + -9x = -1x
9 + -1x = x + 8 + -1(x + -4)

Reorder the terms:
9 + -1x = x + 8 + -1(-4 + x)
9 + -1x = x + 8 + (-4 * -1 + x * -1)
9 + -1x = x + 8 + (4 + -1x)

Reorder the terms:
9 + -1x = 8 + 4 + x + -1x

Combine like terms: 8 + 4 = 12
9 + -1x = 12 + x + -1x

Combine like terms: x + -1x = 0
9 + -1x = 12 + 0
9 + -1x = 12

Solving
9 + -1x = 12

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + -1x = 12 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = 12 + -9
-1x = 12 + -9

Combine like terms: 12 + -9 = 3
-1x = 3

Divide each side by '-1'.
x = -3

Simplifying
x = -3

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