8-7(x+1)=9+x

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Solution for 8-7(x+1)=9+x equation:


Simplifying
8 + -7(x + 1) = 9 + x

Reorder the terms:
8 + -7(1 + x) = 9 + x
8 + (1 * -7 + x * -7) = 9 + x
8 + (-7 + -7x) = 9 + x

Combine like terms: 8 + -7 = 1
1 + -7x = 9 + x

Solving
1 + -7x = 9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
1 + -7x + -1x = 9 + x + -1x

Combine like terms: -7x + -1x = -8x
1 + -8x = 9 + x + -1x

Combine like terms: x + -1x = 0
1 + -8x = 9 + 0
1 + -8x = 9

Add '-1' to each side of the equation.
1 + -1 + -8x = 9 + -1

Combine like terms: 1 + -1 = 0
0 + -8x = 9 + -1
-8x = 9 + -1

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

Divide each side by '-8'.
x = -1

Simplifying
x = -1

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