Question

x-y=11 , 2x-y=4 subtraction​

Answer 1

Step-by-step explanation:

The solutions are:

x

=

10

y

=

−

1

Explanation:

x

−

y

=

11

..........equation

(

1

)

2

x

+

y

=

19

........equation

(

2

)

Solving by elimination

Adding the two equations will eliminate

y

x

−

y

=

11

2

x

+

y

=

19

3

x

=

30

x

=

10

Now finding

y

from equation

(

1

)

y

=

x

−

11

y

=

10

−

11

y

=

−

1