19-3x=21-x

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Solution for 19-3x=21-x equation: 



19-3x=21-x

We move all terms to the left:

19-3x-(21-x)=0

We add all the numbers together, and all the variables

-3x-(-1x+21)+19=0

We get rid of parentheses

-3x+1x-21+19=0

We add all the numbers together, and all the variables

-2x-2=0

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

-2x=2

x=2/-2

x=-1

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