Question

What is the solution of x+4y=3; 3x=2y+2?​

Answer 1

Answer:

I found:

x

=

1

y

=

−

1

2

Explanation:

We can isolate

x

from the second equation and substitute into the first to find

y

:

x

=

4

y

+

3

Into the first:

3

(

4

y

+

3

)

−

2

y

=

4

12

y

+

9

−

2

y

=

4

10

y

=

−

5

y

=

−

5

10

=

−

1

2

Use this value back into:

x

=

4

(

−

1

2

)

+

3

=

−

2

+

3

=

1