Question

a.
9 12
-3
4-5
(6)
be multiplied to get
4. By which number should​

Answer 1

Answer:

Let x be the number,

So, according to question

⇒(x−

2

1

)4=5

⇒4x−

2

4

=5

⇒

2

2×4x−4

=5

⇒8x−4=10

⇒8x=10+4

⇒8x=14

⇒x=

8

14

=

4

7

Hence, x=

4

7

is the number.