3x-45+12x=30

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Solution for 3x-45+12x=30 equation:


Simplifying
3x + -45 + 12x = 30

Reorder the terms:
-45 + 3x + 12x = 30

Combine like terms: 3x + 12x = 15x
-45 + 15x = 30

Solving
-45 + 15x = 30

Solving for variable 'x'.

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

Add '45' to each side of the equation.
-45 + 45 + 15x = 30 + 45

Combine like terms: -45 + 45 = 0
0 + 15x = 30 + 45
15x = 30 + 45

Combine like terms: 30 + 45 = 75
15x = 75

Divide each side by '15'.
x = 5

Simplifying
x = 5

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