3x-18+90=105

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Solution for 3x-18+90=105 equation:


Simplifying
3x + -18 + 90 = 105

Reorder the terms:
-18 + 90 + 3x = 105

Combine like terms: -18 + 90 = 72
72 + 3x = 105

Solving
72 + 3x = 105

Solving for variable 'x'.

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

Add '-72' to each side of the equation.
72 + -72 + 3x = 105 + -72

Combine like terms: 72 + -72 = 0
0 + 3x = 105 + -72
3x = 105 + -72

Combine like terms: 105 + -72 = 33
3x = 33

Divide each side by '3'.
x = 11

Simplifying
x = 11

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