Question

PLEASE KOI ISS KA CORRECT AND FULL DETAILS KE SATH SEND KARO CLASS 10 NCERT​

Answer 1

Answer:

Step-by-step explanation:

Let the present age of Aftab be ‘x’.

And, the present age of his daughter be ‘y’.

Now, we can write, seven years ago,

Age of Aftab = x – 7

Age of his daughter = y – 7

According to the question,

x−7 = 7(y−7)

⇒ x−7 = 7y−49

⇒ x−7y = −42         ………………………(i)

Also, three years from now or after three years,

Age of Aftab will become = x + 3.

Age of his daughter will become = y + 3

According to the situation given,

x+3 = 3(y+3)

⇒x+3 = 3y+9

⇒x−3y = 6       …………..…………………(ii)

Subtracting equation (i) from equation (ii) we have

(x−3y)−(x−7y) = 6−(−42)

⇒−3y+7y=6+42

⇒4y=48

⇒y=12

The algebraic equation is represented by

x−7y = −42

x−3y = 6

For, x−7y =−42 or x = −42+7

The graphical representation is: Given along with the solution tables for both the equations.

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