Question

Linear equations in two variables
3m-n=7,m+4n=11

Answer 1

here is the solution of ur ques

i hope it will help u☺☺

Answer 2

Answer:

Step-by-step explanation:

3 M - N = 7.............(1)

  M  + 4 N = 11 ...............(2)

(1)*4;

12 M-4 N = 28............(3)

(3)+(2)

( M+12 M) +(4 N - 4 N) = 28-11

13 M = 17

M = 17/13

SUBSTITUTING IN (2)

17/13 +4 N= 11

4 N = 11-17/13

4 N = 143-17/13

4 N = 126/13

N = 126/(13*4)

N = 31.5/13

HOPE THIS HELPS.