r-4=-8

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Solution for r-4=-8 equation: 


Simplifying
r + -4 = -8

Reorder the terms:
-4 + r = -8

Solving
-4 + r = -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 + r = -8 + 4

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

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

Simplifying
r = -4

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