20-2r=16

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Solution for 20-2r=16 equation: 


Simplifying
20 + -2r = 16

Solving
20 + -2r = 16

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + -2r = 16 + -20

Combine like terms: 20 + -20 = 0
0 + -2r = 16 + -20
-2r = 16 + -20

Combine like terms: 16 + -20 = -4
-2r = -4

Divide each side by '-2'.
r = 2

Simplifying
r = 2

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