-9=7+8x

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Solution for -9=7+8x equation:


Simplifying
-9 = 7 + 8x

Solving
-9 = 7 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-9 + -8x = 7 + 8x + -8x

Combine like terms: 8x + -8x = 0
-9 + -8x = 7 + 0
-9 + -8x = 7

Add '9' to each side of the equation.
-9 + 9 + -8x = 7 + 9

Combine like terms: -9 + 9 = 0
0 + -8x = 7 + 9
-8x = 7 + 9

Combine like terms: 7 + 9 = 16
-8x = 16

Divide each side by '-8'.
x = -2

Simplifying
x = -2

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