Question

(iii) 3x - 5y-4=0 and 9x = 2y + 7​

Answer 1

Answer:

We have, 3x−5y−4=0

⇒3x−5y=4...(i)

Again 9x=2y+7

⇒9x−2y=7...(ii)

By Elimination Method:

Multiplying equation (i) by 3, we get

9x−15y=12...(iii)

Subtracting (ii) from (iii), we get

9x−15y=12

9x−2y=7

−13y=5

⇒y=− 5/13

Putting the value of equation (ii), we get

9x−2(-5)/13=7

9x+ 10/13=7

9x=7− 10/3

9x= 91-10/13

9x= 9/13

Hence, the required solution is x= 9/13 , y=-5/13

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