12+9+x=37

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Solution for 12+9+x=37 equation: 


Simplifying
12 + 9 + x = 37

Combine like terms: 12 + 9 = 21
21 + x = 37

Solving
21 + x = 37

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + x = 37 + -21

Combine like terms: 21 + -21 = 0
0 + x = 37 + -21
x = 37 + -21

Combine like terms: 37 + -21 = 16
x = 16

Simplifying
x = 16

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