R+15=12

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Solution for R+15=12 equation: 


Simplifying
R + 15 = 12

Reorder the terms:
15 + R = 12

Solving
15 + R = 12

Solving for variable 'R'.

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

Add '-15' to each side of the equation.
15 + -15 + R = 12 + -15

Combine like terms: 15 + -15 = 0
0 + R = 12 + -15
R = 12 + -15

Combine like terms: 12 + -15 = -3
R = -3

Simplifying
R = -3

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