NEED HELP ASAP TY

I've thought about it for like 3 seconds, and I don't think there is a solution.

If I solve any of the first variables, then substitude that result into the other equation, there's no solution.

Yeah uhh.

m=(7-3n)/4 

m=-(3n)/4+2 as well

Yay!

4m  - 4n   =  7  -   7n       rearrange  as

4m +  3n  =  7

The  second equation  can be rearranged  as

2m + (3/2)n   =  4           multiply   through  by  2

4m  + 3n   =  8

As  Varxaax   has  duly noted, there is  no solution

We  can't  add    4m + 3n     and    get  two different  quantities

Good job, Varxaax   !!!!!