Question

1)If 11x+4y =33 and 12x+15y =6, then x-y =

Answer 1

Answer:

first make the coefficient of any variable same.....then solve it

Step-by-step explanation:

it is very easy.....try to solve it your self

Answer 2

Answer:

-6/15

Step-by-step explanation:

12x+15y-6=0--------(1)

11x+4y -33=0-------(2)

12x=6-15y

x=6-15y/12

put this in eq 2

11(6-15y/12)+15y-6=0

66-165y+180y-72=0

15y=6

y=6/15

x=6-15(6/15)/12

x=6-6/12

x=0

x-y

0-6/15

-6/15