18+x/2=21

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Solution for 18+x/2=21 equation: 



18+x/2=21

We move all terms to the left:

18+x/2-(21)=0

We add all the numbers together, and all the variables

x/2-3=0

We multiply all the terms by the denominator


x-3*2=0

We add all the numbers together, and all the variables

x-6=0

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

x=6

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