r+13=17,r=4

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Solution for r+13=17,r=4 equation: 



r+13=17.r=4

We move all terms to the left:

r+13-(17.r)=0

We add all the numbers together, and all the variables

r-(+17.r)+13=0

We get rid of parentheses

r-17.r+13=0

We add all the numbers together, and all the variables

-16r+13=0

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

-16r=-13

r=-13/-16

r=13/16

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