21-4x=0.5x

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Solution for 21-4x=0.5x equation: 



21-4x=0.5x

We move all terms to the left:

21-4x-(0.5x)=0

We add all the numbers together, and all the variables

-4x-(+0.5x)+21=0

We get rid of parentheses

-4x-0.5x+21=0

We add all the numbers together, and all the variables

-4.5x+21=0

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

-4.5x=-21

x=-21/-4.5

x=4+3/4.5

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