0,5=(21-3x)

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Solution for 0,5=(21-3x) equation: 



0.5=(21-3x)

We move all terms to the left:

0.5-((21-3x))=0

We add all the numbers together, and all the variables

-((-3x+21))+0.5=0



We calculate terms in parentheses: -((-3x+21)), so:

(-3x+21)

We get rid of parentheses

-3x+21

Back to the equation:

-(-3x+21)



We get rid of parentheses

3x-21+0.5=0

We add all the numbers together, and all the variables

3x-20.5=0

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

3x=20.5

x=20.5/3

x=6+2.5/3

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