x-8=9-7(x+7)

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Solution for x-8=9-7(x+7) equation:


Simplifying
x + -8 = 9 + -7(x + 7)

Reorder the terms:
-8 + x = 9 + -7(x + 7)

Reorder the terms:
-8 + x = 9 + -7(7 + x)
-8 + x = 9 + (7 * -7 + x * -7)
-8 + x = 9 + (-49 + -7x)

Combine like terms: 9 + -49 = -40
-8 + x = -40 + -7x

Solving
-8 + x = -40 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
-8 + x + 7x = -40 + -7x + 7x

Combine like terms: x + 7x = 8x
-8 + 8x = -40 + -7x + 7x

Combine like terms: -7x + 7x = 0
-8 + 8x = -40 + 0
-8 + 8x = -40

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

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

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

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

Simplifying
x = -4

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