X+5x=21

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Solution for X+5x=21 equation: 



X+5X=21

We move all terms to the left:

X+5X-(21)=0

We add all the numbers together, and all the variables

6X-21=0

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

6X=21

X=21/6

X=3+1/2

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