12r-4r-4=4

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Solution for 12r-4r-4=4 equation: 


Simplifying
12r + -4r + -4 = 4

Reorder the terms:
-4 + 12r + -4r = 4

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

Solving
-4 + 8r = 4

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 + 8r = 4 + 4

Combine like terms: -4 + 4 = 0
0 + 8r = 4 + 4
8r = 4 + 4

Combine like terms: 4 + 4 = 8
8r = 8

Divide each side by '8'.
r = 1

Simplifying
r = 1

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