Question

If we add 7 to twice a number, we get 49. Find the number.

Answer 1

let the unknown number be x.
a/q    2x + 7= 49
         2x = 49-7
           x=  42/2
          ∴x= 21

Answer 2

Answer:

Required number = 21

Step-by-step explanation:

Let the number be x.

Twice the number = 2x

Adding 7 to twice the number = 2x + 7

Now , according to the problem given,

Add 7 to twice the number, we get 49

=> 2x + 7 = 49

/* Subtract both side by 7, we get

=> 2x + 7 - 7 = 49 - 7

=> 2x = 42

/* Divide both sides by 2, we get

=> x = 21

Therefore,

Required number = x = 21

•••♪