(x+2)+(x+3)+(x+1)=21

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Solution for (x+2)+(x+3)+(x+1)=21 equation:



(x+2)+(x+3)+(x+1)=21
We move all terms to the left:
(x+2)+(x+3)+(x+1)-(21)=0
We get rid of parentheses
x+x+x+2+3+1-21=0
We add all the numbers together, and all the variables
3x-15=0
We move all terms containing x to the left, all other terms to the right
3x=15
x=15/3
x=5

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