-7=-3(5)+b

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Solution for -7=-3(5)+b equation: 



-7=-3(5)+b

We move all terms to the left:

-7-(-3(5)+b)=0

We add all the numbers together, and all the variables

-(b-35)-7=0

We get rid of parentheses

-b+35-7=0

We add all the numbers together, and all the variables

-1b+28=0

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

-b=-28

b=-28/-1

b=+28

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