8+x=21;x=

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Solution for 8+x=21;x= equation: 



8+x=21x=

We move all terms to the left:

8+x-(21x)=0

We add all the numbers together, and all the variables

-20x+8=0

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

-20x=-8

x=-8/-20

x=2/5

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