Answer:
4m + 8 n = 20 (1)
-4m +2n = -30(2)
= 10n = - 10
so n,= -1
putting the value in equation (1) ,we get
4m + 8(-1)=20
4m -8=20
4m = 28
m = 7.
the value of m is 7 and value of n is (-1).
n=2
Step-by-step explanation:
↓8n+4=20
↓8n=20-4
↓8n=16
↓n=16/8
↓answer
