0.8+r=12.

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Solution for 0.8+r=12. equation: 



0.8+r=12.

We move all terms to the left:

0.8+r-(12.)=0

We add all the numbers together, and all the variables

r+0.8-12=0

We add all the numbers together, and all the variables

r-11.2=0

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

r=11.2

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