Question

5m-2n=7 3m-n=8 eliminating method ​

Answer 1

Answer:

Step-by-step explanation:

found:

m

=

−

4

n

=

6

Explanation:

You can multply the first equation by  

−

3

and the second by  

2

to get:

{

−

15

m

−

6

n

=

24

{

8

m

+

6

n

=

4

add the two equatons together:

−

7

m

=

28

so  

m

=

−

28

7

=

−

4

substitute this value into the first equation:

−

20

+

2

n

=

−

8

n

=

6