32=40-2b

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Solution for 32=40-2b equation: 



32=40-2b

We move all terms to the left:

32-(40-2b)=0

We add all the numbers together, and all the variables

-(-2b+40)+32=0

We get rid of parentheses

2b-40+32=0

We add all the numbers together, and all the variables

2b-8=0

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

2b=8

b=8/2

b=4

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