4-12r=100

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Solution for 4-12r=100 equation: 


Simplifying
4 + -12r = 100

Solving
4 + -12r = 100

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 = 100 + -4

Combine like terms: 4 + -4 = 0
0 + -12r = 100 + -4
-12r = 100 + -4

Combine like terms: 100 + -4 = 96
-12r = 96

Divide each side by '-12'.
r = -8

Simplifying
r = -8

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