45=4(r+18)

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Solution for 45=4(r+18) equation: 



45=4(r+18)

We move all terms to the left:

45-(4(r+18))=0



We calculate terms in parentheses: -(4(r+18)), so:

4(r+18)

We multiply parentheses

4r+72

Back to the equation:

-(4r+72)



We get rid of parentheses

-4r-72+45=0

We add all the numbers together, and all the variables

-4r-27=0

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

-4r=27

r=27/-4

r=-6+3/4

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