-9[x-8]=-[x-40]

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Solution for -9[x-8]=-[x-40] equation:


Simplifying
-9[x + -8] = -1[x + -40]

Reorder the terms:
-9[-8 + x] = -1[x + -40]
[-8 * -9 + x * -9] = -1[x + -40]
[72 + -9x] = -1[x + -40]

Reorder the terms:
72 + -9x = -1[-40 + x]
72 + -9x = [-40 * -1 + x * -1]
72 + -9x = [40 + -1x]

Solving
72 + -9x = 40 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
72 + -9x + x = 40 + -1x + x

Combine like terms: -9x + x = -8x
72 + -8x = 40 + -1x + x

Combine like terms: -1x + x = 0
72 + -8x = 40 + 0
72 + -8x = 40

Add '-72' to each side of the equation.
72 + -72 + -8x = 40 + -72

Combine like terms: 72 + -72 = 0
0 + -8x = 40 + -72
-8x = 40 + -72

Combine like terms: 40 + -72 = -32
-8x = -32

Divide each side by '-8'.
x = 4

Simplifying
x = 4

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