-42+3x=12-3

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Solution for -42+3x=12-3 equation: 


Simplifying
-42 + 3x = 12 + -3

Combine like terms: 12 + -3 = 9
-42 + 3x = 9

Solving
-42 + 3x = 9

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + 3x = 9 + 42

Combine like terms: -42 + 42 = 0
0 + 3x = 9 + 42
3x = 9 + 42

Combine like terms: 9 + 42 = 51
3x = 51

Divide each side by '3'.
x = 17

Simplifying
x = 17

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