Question

Set the value of M the following system of equation will have a unique solution 3x + my= 10 and 9x+ 12y = 30

Answer 1

m1=m2
-(a/b)=-(a/b)
==
==
3x+my=10
a=3,b=m

9x+12y=30
a=9,b=12
==
==
-(3/m)=-(9/12)
-3/m=-3/4
-12=-3m
4=m