7x-2x-20=20

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Solution for 7x-2x-20=20 equation:


Simplifying
7x + -2x + -20 = 20

Reorder the terms:
-20 + 7x + -2x = 20

Combine like terms: 7x + -2x = 5x
-20 + 5x = 20

Solving
-20 + 5x = 20

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 5x = 20 + 20

Combine like terms: -20 + 20 = 0
0 + 5x = 20 + 20
5x = 20 + 20

Combine like terms: 20 + 20 = 40
5x = 40

Divide each side by '5'.
x = 8

Simplifying
x = 8

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