7x-8x+5x-30=12

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Solution for 7x-8x+5x-30=12 equation:


Simplifying
7x + -8x + 5x + -30 = 12

Reorder the terms:
-30 + 7x + -8x + 5x = 12

Combine like terms: 7x + -8x = -1x
-30 + -1x + 5x = 12

Combine like terms: -1x + 5x = 4x
-30 + 4x = 12

Solving
-30 + 4x = 12

Solving for variable 'x'.

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

Add '30' to each side of the equation.
-30 + 30 + 4x = 12 + 30

Combine like terms: -30 + 30 = 0
0 + 4x = 12 + 30
4x = 12 + 30

Combine like terms: 12 + 30 = 42
4x = 42

Divide each side by '4'.
x = 10.5

Simplifying
x = 10.5

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