Question

the sum of three consecutive numbers is equal to 21 the equation to solve this problem is
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Answer 1

Answer:

x + y + z = 21

Step-by-step explanation:

let the three numbers be x, y, z

"sum" means add so,

add all three letters to get 21 as the answer

Hence: x+y+z=21

Answer 2

Here it is given that the sum of 3 consecutive numbers is 21.

Let us assume the first number to be x, then the next two numbers will be  x+1 and x + 2

So, x + x + 1 + x + 2 = 21

                    3x + 3 = 21

                           3x = 18

                            x = 18 / 3

                            x = 6

So, x = 6

x + 1 = 6 + 1

         = 7

X + 2 = 6 + 2

        = 8

Hence, the three numbers will be 6, 7, and 8