Question

Thr sum of a number and 21 equals 30. find the number

Answer 1

Answer:

9

Step-by-step explanation:

Let the number be x.

==: x + 21 = 30

==: x = 30 - 21

==: x = 9

Pls mark my answer as brainlist

Pls follow me

Answer 2

Answer:

let the other number be x

second number = 21

Total sum of these numbers = 30

x+21=30

x = 30 -21

x=9

check = x +21

9+21 = 30.