10b+20=40

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Solution for 10b+20=40 equation: 



10b+20=40

We move all terms to the left:

10b+20-(40)=0

We add all the numbers together, and all the variables

10b-20=0

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

10b=20

b=20/10

b=2

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