-20r+15r=20

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Solution for -20r+15r=20 equation:



-20r+15r=20
We move all terms to the left:
-20r+15r-(20)=0
We add all the numbers together, and all the variables
-5r-20=0
We move all terms containing r to the left, all other terms to the right
-5r=20
r=20/-5
r=-4

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