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These are two consecuthive multiples of 3, whose sum is 51.

8*3 is a number, and 9*3 is anumber. Both are consecutive multiples of three, whose sum gives 51.

24+27=51.

Hope this will help you.

Let of the numbers be 3x

Other number should be 3(x+1)

Sum = 51

⇒ 3x + 3(x+1) = 51

⇒ 3x + 3x + 3 = 51

⇒ 6x + 3 = 51

⇒ 6x = 51 - 3 = 48

⇒ x = 48/6

⇒ x = 8

Numbers are:

3x = 3×8 =

3(x+1) = 3(8+1) =