Question

m+n-8=m+2n-14=3m+n-12 ​

Answer 1

Step-by-step explanation:

m+n-8=m+2n-14

=> m+n-m-2n= -14+8

=> -n= -6

=> n=6

again,

m+n-8=3m+n-12

=> m+n-3m-n= -12+8

=> -2m= -4

=> m= -4/-2=2

so, m=2, n=6

Answer 2

Answer:

I hope answer is helpful to us