7x+2x=8x-4

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Solution for 7x+2x=8x-4 equation:


Simplifying
7x + 2x = 8x + -4

Combine like terms: 7x + 2x = 9x
9x = 8x + -4

Reorder the terms:
9x = -4 + 8x

Solving
9x = -4 + 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.
9x + -8x = -4 + 8x + -8x

Combine like terms: 9x + -8x = 1x
1x = -4 + 8x + -8x

Combine like terms: 8x + -8x = 0
1x = -4 + 0
1x = -4

Divide each side by '1'.
x = -4

Simplifying
x = -4

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