Question

. Twice a number when decreased by 7 gives 45. Find the number​

Answer 1

Answer:

2x-7=45

2x=52

x=26

hope it helps

Answer 2

Answer :-

The number is 26

Solution :-

Let the number be x

As it is given that twice x when decreased by 7 gives 45.

According to question,

$= > 2x - 7 = 45$

$= > 2x = 45 + 7$

$= > 2x = 52$

$= > x = \dfrac{52}{2}$

$= > x = 26$

Hence, the number is 26.

Verification :-

Putting the value of x

$= > 2 \times 26 - 7 = 45$

$= > 52 - 7 = 45$

$= > 47 = 47$

Therefore , L.H.S = R.H.S

Hence, Proved.