Question

The sum of two consecutive odd numbers is 40. If the first number is represented by x, which equation can you use to find these two odd numbers?

Answer 1

consecutive off numbers are 2 apart
so if x is one then y=2+x
and their sum is 40 so x+y=40

the 2 equations are x+y=40 and y=x+2
if we substitute we get x+x+2=40 so x=19
and therefore y=2+19=21

Answer 2

x + (x + 2) = 40

Explanation: