2(2r+8)=20

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Solution for 2(2r+8)=20 equation: 


Simplifying
2(2r + 8) = 20

Reorder the terms:
2(8 + 2r) = 20
(8 * 2 + 2r * 2) = 20
(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 = 4
4r = 4

Divide each side by '4'.
r = 1

Simplifying
r = 1

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