(9r+2)+70=90

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Solution for (9r+2)+70=90 equation:



(9r+2)+70=90
We move all terms to the left:
(9r+2)+70-(90)=0
We add all the numbers together, and all the variables
(9r+2)-20=0
We get rid of parentheses
9r+2-20=0
We add all the numbers together, and all the variables
9r-18=0
We move all terms containing r to the left, all other terms to the right
9r=18
r=18/9
r=2

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