0.9(0.5b+0.8)0.4(0.6b+1.8)=0.21b

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Solution for 0.9(0.5b+0.8)0.4(0.6b+1.8)=0.21b equation: 



0.9(0.5b+0.8)0.4(0.6b+1.8)=0.21b

We move all terms to the left:

0.9(0.5b+0.8)0.4(0.6b+1.8)-(0.21b)=0

We add all the numbers together, and all the variables

0.9(0.5b+0.8)0.4(0.6b+1.8)-(+0.21b)=0

We get rid of parentheses

0.9(0.5b+0.8)0.4(0.6b+1.8)-0.21b=0

We add all the numbers together, and all the variables

-0.21b+0.9(0.5b+0.8)0.4(0.6b+1.8)=0

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