8r-4=28

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Solution for 8r-4=28 equation: 


Simplifying
8r + -4 = 28

Reorder the terms:
-4 + 8r = 28

Solving
-4 + 8r = 28

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 = 28 + 4

Combine like terms: -4 + 4 = 0
0 + 8r = 28 + 4
8r = 28 + 4

Combine like terms: 28 + 4 = 32
8r = 32

Divide each side by '8'.
r = 4

Simplifying
r = 4

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