4+12r=112

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Solution for 4+12r=112 equation: 


Simplifying
4 + 12r = 112

Solving
4 + 12r = 112

Solving for variable 'r'.

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

Add '-4' to each side of the equation.
4 + -4 + 12r = 112 + -4

Combine like terms: 4 + -4 = 0
0 + 12r = 112 + -4
12r = 112 + -4

Combine like terms: 112 + -4 = 108
12r = 108

Divide each side by '12'.
r = 9

Simplifying
r = 9

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