Question

(1) 3х-4y=-6
(2) x+2y=8 ​

Answer 1

3x-4y= -6

x+2y=8⇒x=8-2y=8-2·3=2

3(8-2y)-4y= -6

24-6y-4y= -6

24-10y= -6

24+6=10y

30=10y

3=y

x=2

y=3