12+0.5(4r+8)=36

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Solution for 12+0.5(4r+8)=36 equation: 



12+0.5(4r+8)=36

We move all terms to the left:

12+0.5(4r+8)-(36)=0

We add all the numbers together, and all the variables

0.5(4r+8)-24=0

We multiply parentheses

2r+4-24=0

We add all the numbers together, and all the variables

2r-20=0

We move all terms containing r to the left, all other terms to the right

2r=20

r=20/2

r=10

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