Question

If the simultaneous equations are given as
13x - 5y = 20,7x + 4y= 18, then the values
of x, y are respectively​

Answer 1

Answer:

13x-5y=20

7x+4y=18

-. -. -

6x-9y=2

6x=9y+2

x=9y+2/6-------- eq 1

7(9y+2/6)+4y=20

63y+14/6+4y=20

63y+14+24y/6=20

87y +14=120

87y=120-14

87y=106

y=106/87

y=1.2