-12=-4+R

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Solution for -12=-4+R equation: 


Simplifying
-12 = -4 + R

Solving
-12 = -4 + 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 = -4 + R + -1R

Combine like terms: R + -1R = 0
-12 + -1R = -4 + 0
-12 + -1R = -4

Add '12' to each side of the equation.
-12 + 12 + -1R = -4 + 12

Combine like terms: -12 + 12 = 0
0 + -1R = -4 + 12
-1R = -4 + 12

Combine like terms: -4 + 12 = 8
-1R = 8

Divide each side by '-1'.
R = -8

Simplifying
R = -8

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