7x-12-4.5x=18

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Solution for 7x-12-4.5x=18 equation:


Simplifying
7x + -12 + -4.5x = 18

Reorder the terms:
-12 + 7x + -4.5x = 18

Combine like terms: 7x + -4.5x = 2.5x
-12 + 2.5x = 18

Solving
-12 + 2.5x = 18

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 2.5x = 18 + 12

Combine like terms: -12 + 12 = 0
0 + 2.5x = 18 + 12
2.5x = 18 + 12

Combine like terms: 18 + 12 = 30
2.5x = 30

Divide each side by '2.5'.
x = 12

Simplifying
x = 12

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