Question

the sum three consecutive numbers are138 . find the number

Answer 1

let the consecutive number be

x

x+1

x+2

so

x+x+1+x+2+x+3 = 138

3x+6 = 138

3x = 138-6

3x = 132

x = 132/3

x = 44

then

x+1 = 44 +1
= 45

x+2 = 44+2
= 46

x+3 = 44+3
= 47

Answer 2

First consecutive number = x
Second consecutive number = x + 1
Third consecutive number = x + 2
Total sum = 138

So; x + (x + 1) + (x + 2) = 138
x + x + x + 1 + 2 = 138
3x + 3 = 138
3x = 138 - 3
3x = 135
x = 135 / 3
x = 45

So first consecutive number = 45
second consecutive number = 46
third consecutive number = 47

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