3x-3+x=45

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


Simplifying
3x + -3 + x = 45

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

Combine like terms: 3x + x = 4x
-3 + 4x = 45

Solving
-3 + 4x = 45

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 4x = 45 + 3

Combine like terms: -3 + 3 = 0
0 + 4x = 45 + 3
4x = 45 + 3

Combine like terms: 45 + 3 = 48
4x = 48

Divide each side by '4'.
x = 12

Simplifying
x = 12

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