20.5=1.6-2.1b

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Solution for 20.5=1.6-2.1b equation: 



20.5=1.6-2.1b

We move all terms to the left:

20.5-(1.6-2.1b)=0

We add all the numbers together, and all the variables

-(-2.1b+1.6)+20.5=0

We get rid of parentheses

2.1b-1.6+20.5=0

We add all the numbers together, and all the variables

2.1b+18.9=0

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

2.1b=-18.9

b=-18.9/2.1

b=-8+1/1

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