-21r+24=-18

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Solution for -21r+24=-18 equation: 



-21r+24=-18

We move all terms to the left:

-21r+24-(-18)=0

We add all the numbers together, and all the variables

-21r+42=0

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

-21r=-42

r=-42/-21

r=+2

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