115+100+2r+(r+25)=720

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Solution for 115+100+2r+(r+25)=720 equation: 



115+100+2r+(r+25)=720

We move all terms to the left:

115+100+2r+(r+25)-(720)=0

We add all the numbers together, and all the variables

2r+(r+25)-505=0

We get rid of parentheses

2r+r+25-505=0

We add all the numbers together, and all the variables

3r-480=0

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

3r=480

r=480/3

r=160

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