8=9x-7x

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Solution for 8=9x-7x equation:


Simplifying
8 = 9x + -7x

Combine like terms: 9x + -7x = 2x
8 = 2x

Solving
8 = 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
8 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
8 + -2x = 0

Add '-8' to each side of the equation.
8 + -8 + -2x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -2x = 0 + -8
-2x = 0 + -8

Combine like terms: 0 + -8 = -8
-2x = -8

Divide each side by '-2'.
x = 4

Simplifying
x = 4

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