1+5r-1+r=-18

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Solution for 1+5r-1+r=-18 equation: 



1+5r-1+r=-18

We move all terms to the left:

1+5r-1+r-(-18)=0

We add all the numbers together, and all the variables

6r+18=0

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

6r=-18

r=-18/6

r=-3

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