Question

If 2x + 3y = 7 and 3x + 2y = 3, then x – y = _________ *​

Answer 1

Answer:

x-y=-4

Explanation:

3x+2y=3

-2x-3y=-7

=x-y=-4

Answer 2

Explanation:

2x + 3y = 7 --------(1)

3x + 2y = 3 --------(2)

equation (1) multiple by 3

and

equation (2) multiple by 2

6x + 9y = 21

6x + 4y = 6

- - -

-----------------------------

0 + 5y = 15

5y = 15

y = 15/5

y = 3

putting the value of y in equation (1)

2x + 3× 3 = 7

2x + 9 = 7

2x = 7- 9

2x = -2

x = -2/2

x = -1

x - y =

-1 -3 = -4