2b+128=7b+143

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Solution for 2b+128=7b+143 equation: 



2b+128=7b+143

We move all terms to the left:

2b+128-(7b+143)=0

We get rid of parentheses

2b-7b-143+128=0

We add all the numbers together, and all the variables

-5b-15=0

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

-5b=15

b=15/-5

b=-3

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