15+2.5=10+3r

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Solution for 15+2.5=10+3r equation: 



15+2.5=10+3r

We move all terms to the left:

15+2.5-(10+3r)=0

We add all the numbers together, and all the variables

-(3r+10)+15+2.5=0

We add all the numbers together, and all the variables

-(3r+10)+17.5=0

We get rid of parentheses

-3r-10+17.5=0

We add all the numbers together, and all the variables

-3r+7.5=0

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

-3r=-7.5

r=-7.5/-3

r=2+1/2

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