-16+4r=20

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Solution for -16+4r=20 equation: 


Simplifying
-16 + 4r = 20

Solving
-16 + 4r = 20

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '16' to each side of the equation.
-16 + 16 + 4r = 20 + 16

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

Combine like terms: 20 + 16 = 36
4r = 36

Divide each side by '4'.
r = 9

Simplifying
r = 9

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