Question

Розв'яжіть систему рівнянь x-2y=3, x-3y=1

Answer 1

Ответ:

Y=2

X=7

Объяснение:

x-2y=3,

X=3+2y

x-3y=1

X=1+3y

1+3y=3+2y

Y=2

X=3+2y=3+2*2=7

Answer 2

Answer:

Arrange the equations. You get  

x

=

5

and  

y

=

2

Explanation:

x

−

3

y

=

−

1

−

x

−

2

y

=

−

9

(after multiplying the 2nd equation by -1#

Now add these:

−

5

y

=

−

10

y

=

2

Put this value in the 1st original equation:

x

−

(

3

×

2

)

=

−

1

x

−

6

=

−

1

x

=

−

1

+

6

x

=

5