R-12=-15

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Solution for R-12=-15 equation: 


Simplifying
R + -12 = -15

Reorder the terms:
-12 + R = -15

Solving
-12 + R = -15

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 = -15 + 12

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

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

Simplifying
R = -3

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