0.4b-0.1(b-1000)=70

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Solution for 0.4b-0.1(b-1000)=70 equation: 



0.4b-0.1(b-1000)=70

We move all terms to the left:

0.4b-0.1(b-1000)-(70)=0

We multiply parentheses

0.4b-0.1b+100-70=0

We add all the numbers together, and all the variables

0.3b+30=0

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

0.3b=-30

b=-30/0.3

b=-100

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