Question

4m-3m=0and m+2n=3

Answer 1

typo, the bot would be wrong

assume it was
4m - 3n = 0
m + 2n = 3 ---> m = 3-2n

use sub.
4(3-2n) - 3n = 0
12 - 11n = 0
11n=12
n = 12/11 , then m = 3 - 24/11 = 9/11

Answer 2

m=3 and n=1