4r-4=8

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Solution for 4r-4=8 equation: 


Simplifying
4r + -4 = 8

Reorder the terms:
-4 + 4r = 8

Solving
-4 + 4r = 8

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 + 4r = 8 + 4

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

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

Divide each side by '4'.
r = 3

Simplifying
r = 3

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