12x-42=7x+3

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Solution for 12x-42=7x+3 equation:


Simplifying
12x + -42 = 7x + 3

Reorder the terms:
-42 + 12x = 7x + 3

Reorder the terms:
-42 + 12x = 3 + 7x

Solving
-42 + 12x = 3 + 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 + 12x + -7x = 3 + 7x + -7x

Combine like terms: 12x + -7x = 5x
-42 + 5x = 3 + 7x + -7x

Combine like terms: 7x + -7x = 0
-42 + 5x = 3 + 0
-42 + 5x = 3

Add '42' to each side of the equation.
-42 + 42 + 5x = 3 + 42

Combine like terms: -42 + 42 = 0
0 + 5x = 3 + 42
5x = 3 + 42

Combine like terms: 3 + 42 = 45
5x = 45

Divide each side by '5'.
x = 9

Simplifying
x = 9

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