-13r+2r+3r-18r-20r=12

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Solution for -13r+2r+3r-18r-20r=12 equation:



-13r+2r+3r-18r-20r=12
We move all terms to the left:
-13r+2r+3r-18r-20r-(12)=0
We add all the numbers together, and all the variables
-46r-12=0
We move all terms containing r to the left, all other terms to the right
-46r=12
r=12/-46
r=-6/23

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