Question

a number when divided by 4 is reduced by 21 find number

Answer 1

When we get to solve such questions, then the first step must be to assume our answer as a variable like ' x '.

So,

Let the required number be ' x ' .

If we read the question carefully then on the basis of our assumption we can derive the following equation,

x / 4 = x - 21

Now taking ' x ' on RHS to LHS,

x / 4 - x = - 21

( x - 4x ) / 4 = - 21

Taking " /4 " on LHS to RHS,

- 3x = - 21 * 4

- 3x = - 84

Cancelling the negative signs,

3x = 84

Taking " 3 " on LHS to RHS,

x = 84 / 3

$\large{\boxed{\bold {\underline{ x = 28}}}}$

Hence,

The required number = x = 28

Answer 2

Answer:

Step-by-step explanation:

Let the required number be x

Then,x/4=x-21

=x/4 -x = -21

(x-4x)/4 = -21

= -3x=-21×4

-3x= -84

Cut the negative signs

3x=84

x= 84/3

x=28