r+12=27

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Solution for r+12=27 equation: 


Simplifying
r + 12 = 27

Reorder the terms:
12 + r = 27

Solving
12 + r = 27

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + r = 27 + -12

Combine like terms: 12 + -12 = 0
0 + r = 27 + -12
r = 27 + -12

Combine like terms: 27 + -12 = 15
r = 15

Simplifying
r = 15

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