12=R-8

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Solution for 12=R-8 equation: 


Simplifying
12 = R + -8

Reorder the terms:
12 = -8 + R

Solving
12 = -8 + R

Solving for variable 'R'.

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

Add '-1R' to each side of the equation.
12 + -1R = -8 + R + -1R

Combine like terms: R + -1R = 0
12 + -1R = -8 + 0
12 + -1R = -8

Add '-12' to each side of the equation.
12 + -12 + -1R = -8 + -12

Combine like terms: 12 + -12 = 0
0 + -1R = -8 + -12
-1R = -8 + -12

Combine like terms: -8 + -12 = -20
-1R = -20

Divide each side by '-1'.
R = 20

Simplifying
R = 20

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