8+b*4=40

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Solution for 8+b*4=40 equation: 



8+b*4=40

We move all terms to the left:

8+b*4-(40)=0

We add all the numbers together, and all the variables

b*4-32=0

Wy multiply elements

4b-32=0

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

4b=32

b=32/4

b=8

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