-195+9x+12x=57

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Solution for -195+9x+12x=57 equation: 


Simplifying
-195 + 9x + 12x = 57

Combine like terms: 9x + 12x = 21x
-195 + 21x = 57

Solving
-195 + 21x = 57

Solving for variable 'x'.

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

Add '195' to each side of the equation.
-195 + 195 + 21x = 57 + 195

Combine like terms: -195 + 195 = 0
0 + 21x = 57 + 195
21x = 57 + 195

Combine like terms: 57 + 195 = 252
21x = 252

Divide each side by '21'.
x = 12

Simplifying
x = 12

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