Question

1.1x+1.5y+2.3=0,0.7x-0.2y=2

Answer 1

1.1x+1.5y+2.3=0

0.7x-0.2y=2

11/10x+15/10y+23/10=0

7/10+2/10=2

11x+15y+23=0 .....1.equ

7x+2y=20 ......2equ

Solving 1 and 2

2(11x+15y+23=0)

15(7x+2y=20)

22x+30y+46=0

105x+30y-300

-       -       +

...........................

-83x+254 =0

83x =254

X=254/83

From 2

7x+2y=20

7(254/83)+2y=20

2y=20-1778/83

y=(1660-1778)/83x2