-9r+13=4

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Solution for -9r+13=4 equation: 



-9r+13=4

We move all terms to the left:

-9r+13-(4)=0

We add all the numbers together, and all the variables

-9r+9=0

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

-9r=-9

r=-9/-9

r=1

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