Question

2x-3y =13 ,7x-2y=20 by substitute method

Answer 1

Answer:

By elimination method!!

Step-by-step explanation:

2x-3y =13 ]X2 .......... (I)

7x-2y =20 ]X 3 .......... (II)

4x-6y = 26

21x-6y = 60

- + -

17x = 34

x = 34/17

x = 2

Putting "x" in (I)

2x-3y = 13

4-3y = 13

4-13 = 3y

9 = 3y

9/3 = y

y = 3

=> x= 2

y= 3 ans.