18-4b=-7(-7+4b)-7

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Solution for 18-4b=-7(-7+4b)-7 equation: 



18-4b=-7(-7+4b)-7

We move all terms to the left:

18-4b-(-7(-7+4b)-7)=0

We add all the numbers together, and all the variables

-4b-(-7(4b-7)-7)+18=0



We calculate terms in parentheses: -(-7(4b-7)-7), so:

-7(4b-7)-7

We multiply parentheses

-28b+49-7

We add all the numbers together, and all the variables

-28b+42

Back to the equation:

-(-28b+42)



We get rid of parentheses

-4b+28b-42+18=0

We add all the numbers together, and all the variables

24b-24=0

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

24b=24

b=24/24

b=1

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