unadultarated
New Member
 Joined
 May 27, 2019
 Messages
 15
 Gender
 Male
 HSC
 2019
btw answer is 3.
Studying simultaenous equations and I still cant find the naswer to my question.
How do you know which variable x or y in either equation to isolate/ use for the subsitution.
Studying simultaenous equations and I still cant find the naswer to my question.
How do you know which variable x or y in either equation to isolate/ use for the subsitution.
Attachments

1.1 KB Views: 42