Problem. The sum of three consecutive natural numbers

The sum of three consecutive natural numbers is 87 find out the 3 numbers by filling in the following boxes. The numbers are noted with x, y, z.

Exemple !

The sum of three consecutive natural numbers is 15 find out the 3 numbers. The numbers are noted with x, y, z.

We divide the sum by 3 to find out the first number

x = 15 : 3 => x = 5

In order to find the next two numbers we have to subtract and add one

y = 5 - 1 => y = 4

z = 5 +1 => z = 6

We verify to see if the exercise has been solved correctly

4 + 5 + 6 = 15

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