-21=3.2x+3

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Solution for -21=3.2x+3 equation: 



-21=3.2x+3

We move all terms to the left:

-21-(3.2x+3)=0

We get rid of parentheses

-3.2x-3-21=0

We add all the numbers together, and all the variables

-3.2x-24=0

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

-3.2x=24

x=24/-3.2

x=-7+1/2

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