5r+15r=160

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Solution for 5r+15r=160 equation: 



5r+15r=160

We move all terms to the left:

5r+15r-(160)=0

We add all the numbers together, and all the variables

20r-160=0

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

20r=160

r=160/20

r=8

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