9x-42=7x-20

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Solution for 9x-42=7x-20 equation:


Simplifying
9x + -42 = 7x + -20

Reorder the terms:
-42 + 9x = 7x + -20

Reorder the terms:
-42 + 9x = -20 + 7x

Solving
-42 + 9x = -20 + 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.
-42 + 9x + -7x = -20 + 7x + -7x

Combine like terms: 9x + -7x = 2x
-42 + 2x = -20 + 7x + -7x

Combine like terms: 7x + -7x = 0
-42 + 2x = -20 + 0
-42 + 2x = -20

Add '42' to each side of the equation.
-42 + 42 + 2x = -20 + 42

Combine like terms: -42 + 42 = 0
0 + 2x = -20 + 42
2x = -20 + 42

Combine like terms: -20 + 42 = 22
2x = 22

Divide each side by '2'.
x = 11

Simplifying
x = 11

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