Question

Anumber is multiplied by 2 and 7 is subtracted from the product. The result obtained is 23.
Find the number.​

Answer 1

Given,

A number is multipled by 2.

Let that number be x

It is also given 7 is subtracted from the product.

The result obtained is 23.

According to the statements,

We get , 2x-7=23

2x-7=23

2x=23+7

2x=30

x=30/2

x=15

Therefore the number is 15.

Answer 2

Given : Number is multiplied by 2

And from product 7 is subtracted. The result is 23

To find : the number

Solution

Let the number be x

$\therefore \: 2 \times x = 2x$

And from the product 7 is subtracted and the result is 23

$this \: mens$

$2x - 7 = 23$

Seperate the like terms a side

$\implies \: 2x = 23 + 7$

After changing the side ( - ) becomes (+)

$\implies \: 2x = 30$

Change the side of 2

$\implies \: x = \dfrac{ \cancel{30}} {\cancel{2} }$

$\large \bold{\boxed{\implies \: x \: = 15}}$

$\underline{ \underline{Verification}}$

To verify it put the value of x

=> 2x - 7 = 23

=> 2 × 15 -7 = 23

=> 30 - 7 =23

=> 23 = 23

hence verified