18x+9=7x+12x-3

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Solution for 18x+9=7x+12x-3 equation:


Simplifying
18x + 9 = 7x + 12x + -3

Reorder the terms:
9 + 18x = 7x + 12x + -3

Reorder the terms:
9 + 18x = -3 + 7x + 12x

Combine like terms: 7x + 12x = 19x
9 + 18x = -3 + 19x

Solving
9 + 18x = -3 + 19x

Solving for variable 'x'.

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

Add '-19x' to each side of the equation.
9 + 18x + -19x = -3 + 19x + -19x

Combine like terms: 18x + -19x = -1x
9 + -1x = -3 + 19x + -19x

Combine like terms: 19x + -19x = 0
9 + -1x = -3 + 0
9 + -1x = -3

Add '-9' to each side of the equation.
9 + -9 + -1x = -3 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -3 + -9
-1x = -3 + -9

Combine like terms: -3 + -9 = -12
-1x = -12

Divide each side by '-1'.
x = 12

Simplifying
x = 12

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