Question

Sum of 3 consecutive numbers is 39. Find the middle number

Answer 1

Answer:

Step-by-step explanation:

Let

x =1st integer

x+1=2nd integer

x+2=3rd intreger

so..

x+x+1+x+2=39

combining like terms. . .

3x+3=39

3x=39–3

3x=36

x=36/3

x=12, so . .

x=12

x+1=13

x+2=14

therefor the threee consecutive integers are 12,13 and 14. And 13 is the middle integer in the sequence.

Answer 2

Step-by-step explanation:

x+x+1+x+2=39

3x+3=39

3x=36

x=12

middle:x+1=12+1=13