10r-3=2(12+4r)-7

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Solution for 10r-3=2(12+4r)-7 equation: 



10r-3=2(12+4r)-7

We move all terms to the left:

10r-3-(2(12+4r)-7)=0

We add all the numbers together, and all the variables

10r-(2(4r+12)-7)-3=0



We calculate terms in parentheses: -(2(4r+12)-7), so:

2(4r+12)-7

We multiply parentheses

8r+24-7

We add all the numbers together, and all the variables

8r+17

Back to the equation:

-(8r+17)



We get rid of parentheses

10r-8r-17-3=0

We add all the numbers together, and all the variables

2r-20=0

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

2r=20

r=20/2

r=10

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