R+8=12

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Solution for R+8=12 equation: 


Simplifying
R + 8 = 12

Reorder the terms:
8 + R = 12

Solving
8 + R = 12

Solving for variable 'R'.

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

Add '-8' to each side of the equation.
8 + -8 + R = 12 + -8

Combine like terms: 8 + -8 = 0
0 + R = 12 + -8
R = 12 + -8

Combine like terms: 12 + -8 = 4
R = 4

Simplifying
R = 4

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