X-4=12+15

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Solution for X-4=12+15 equation: 


Simplifying
X + -4 = 12 + 15

Reorder the terms:
-4 + X = 12 + 15

Combine like terms: 12 + 15 = 27
-4 + X = 27

Solving
-4 + X = 27

Solving for variable 'X'.

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

Add '4' to each side of the equation.
-4 + 4 + X = 27 + 4

Combine like terms: -4 + 4 = 0
0 + X = 27 + 4
X = 27 + 4

Combine like terms: 27 + 4 = 31
X = 31

Simplifying
X = 31

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