7x-9=12x+42

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Solution for 7x-9=12x+42 equation:


Simplifying
7x + -9 = 12x + 42

Reorder the terms:
-9 + 7x = 12x + 42

Reorder the terms:
-9 + 7x = 42 + 12x

Solving
-9 + 7x = 42 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
-9 + 7x + -12x = 42 + 12x + -12x

Combine like terms: 7x + -12x = -5x
-9 + -5x = 42 + 12x + -12x

Combine like terms: 12x + -12x = 0
-9 + -5x = 42 + 0
-9 + -5x = 42

Add '9' to each side of the equation.
-9 + 9 + -5x = 42 + 9

Combine like terms: -9 + 9 = 0
0 + -5x = 42 + 9
-5x = 42 + 9

Combine like terms: 42 + 9 = 51
-5x = 51

Divide each side by '-5'.
x = -10.2

Simplifying
x = -10.2

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