10(9+2b)=-30

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Solution for 10(9+2b)=-30 equation: 



10(9+2b)=-30

We move all terms to the left:

10(9+2b)-(-30)=0

We add all the numbers together, and all the variables

10(2b+9)-(-30)=0

We add all the numbers together, and all the variables

10(2b+9)+30=0

We multiply parentheses

20b+90+30=0

We add all the numbers together, and all the variables

20b+120=0

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

20b=-120

b=-120/20

b=-6

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