2(b+9)=4(20-4)+15

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Solution for 2(b+9)=4(20-4)+15 equation: 



2(b+9)=4(20-4)+15

We move all terms to the left:

2(b+9)-(4(20-4)+15)=0

We add all the numbers together, and all the variables

2(b+9)-(416+15)=0

We add all the numbers together, and all the variables

2(b+9)-431=0

We multiply parentheses

2b+18-431=0

We add all the numbers together, and all the variables

2b-413=0

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

2b=413

b=413/2

b=206+1/2

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