7r+8=78

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Solution for 7r+8=78 equation:



7r+8=78
We move all terms to the left:
7r+8-(78)=0
We add all the numbers together, and all the variables
7r-70=0
We move all terms containing r to the left, all other terms to the right
7r=70
r=70/7
r=10

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