2x+18+5x-3x=90-12

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Solution for 2x+18+5x-3x=90-12 equation:


Simplifying
2x + 18 + 5x + -3x = 90 + -12

Reorder the terms:
18 + 2x + 5x + -3x = 90 + -12

Combine like terms: 2x + 5x = 7x
18 + 7x + -3x = 90 + -12

Combine like terms: 7x + -3x = 4x
18 + 4x = 90 + -12

Combine like terms: 90 + -12 = 78
18 + 4x = 78

Solving
18 + 4x = 78

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 4x = 78 + -18

Combine like terms: 18 + -18 = 0
0 + 4x = 78 + -18
4x = 78 + -18

Combine like terms: 78 + -18 = 60
4x = 60

Divide each side by '4'.
x = 15

Simplifying
x = 15

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