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Question 423123: Find three consecutive number whose sum is sixty-three
Answer by algebrahouse.com(1659)   (Show Source):
You can put this solution on YOUR website! "Find three consecutive number whose sum is sixty-three"
x = 1st consecutive number
x + 1 = 2nd consecutive number
x + 2 = 3rd consecutive number
x + x + 1 + x + 2 = 63 {their sum is 63}
3x + 3 = 63 {combined like terms}
3x = 60 {subtracted 3 from both sides}
x = 20 {divided both sides by 3}
x + 1 = 21 {substituted 20, in for x, into x + 1}
x + 2 = 22 {substituted 20, in for x, into x + 2}
20,21, and 22 are the three numbers
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