sum of 2 consecutive multiples of 3 is 69. find them.
The trick here is to realize that
"2 consecutive multiples of 3"
means
"2 consecutive integers, each multiplied by 3"
Let the first consecutive integer be n
Then the second consecutive integer is n+1
So,
the first consecutive multiple of 3 is 3n
the second consecutive multiple of 3 is 3(n+1)
sum of 2 consecutive multiples of 3 is 69
So,
3n + 3(n+1) = 69
Solve that and get the the two consecutive integers,
then get the two consecutive multiples of 3.
Edwin
