Question

plz proper answer send me gyz​

Answer 1

Answer:

subtract both the equations..

then y is cancelled

and we get , 3x-x = 2-7

→ 2x = -5

→ x = -5/2

and y = 7-x = 7+5/2 = 19/2

Answer 2

Answer:

(3x+y=2) .... i

(x+y=7)×3 .... ii

3x+y=2

3x+3y=21

Subtract ii-i

2y=19

y=19/2 (9.5)

so,

x=-2.5