Question

Add

4x'y, -3xy, -5xy, 5xy step by step​

Answer 1

Answer:

Here is the answer...

First take the second equation...

x

+

y

=

10

x

=

10

−

y

...

(

e

q

.

1

)

Now substitute

(

e

q

.

1

)

in the given equation

4

x

−

y

=

5

.

4

(

10

−

y

)

−

y

=

5

40

−

4

y

−

y

=

5

40

−

5

y

=

5

40

−

5

=

5

y

35

=

5

y

y

=

7

Substituting this value of

y

in

(

e

q

.

1

)

, we get

x

=

3

.

Therefore,

x

=

3

and

y

=

7

.