8r-16+20=

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Solution for 8r-16+20= equation: 


Simplifying
8r + -16 + 20 = 0

Reorder the terms:
-16 + 20 + 8r = 0

Combine like terms: -16 + 20 = 4
4 + 8r = 0

Solving
4 + 8r = 0

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 = 0 + -4

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

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

Divide each side by '8'.
r = -0.5

Simplifying
r = -0.5

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