.5=-2.1/7+b

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Solution for .5=-2.1/7+b equation:


.5=-2.1/7+b

We simplify the equation to the form, which is simple to understand 
.5=-2.1/7+b

Simplifying:
.5=-0.3+b

We move all terms containing b to the left and all other terms to the right. 
-1b=-0.3-0.5

We simplify left and right side of the equation. 
-1b=-0.8

We divide both sides of the equation by -01 to get b. 
b=0.8

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