3+9x=7x+7-8

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Solution for 3+9x=7x+7-8 equation:


Simplifying
3 + 9x = 7x + 7 + -8

Reorder the terms:
3 + 9x = 7 + -8 + 7x

Combine like terms: 7 + -8 = -1
3 + 9x = -1 + 7x

Solving
3 + 9x = -1 + 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.
3 + 9x + -7x = -1 + 7x + -7x

Combine like terms: 9x + -7x = 2x
3 + 2x = -1 + 7x + -7x

Combine like terms: 7x + -7x = 0
3 + 2x = -1 + 0
3 + 2x = -1

Add '-3' to each side of the equation.
3 + -3 + 2x = -1 + -3

Combine like terms: 3 + -3 = 0
0 + 2x = -1 + -3
2x = -1 + -3

Combine like terms: -1 + -3 = -4
2x = -4

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

Simplifying
x = -2

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