Question

by elimination method solve =27x-45y=36
27x-6y=21​

Answer 1

Answer:

x=0.69

y= -0.38

Step-by-step explanation:

27x-45y=36

27x-6y=21

  27(27x-45y=36)

  27(27x-6y=21)  

   -(729x-1254y=972)

   -(729x-162y=567)

-1053y=405÷-1053y

Y=-0.38

27x-45x-0.38=36

27x=36-17.1÷27

=0.69