(4b-7)(5)=65

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Solution for (4b-7)(5)=65 equation: 



(4b-7)(5)=65

We move all terms to the left:

(4b-7)(5)-(65)=0

We multiply parentheses

20b-35-65=0

We add all the numbers together, and all the variables

20b-100=0

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

20b=100

b=100/20

b=5

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