How do you solve the following linear system: # 3y-15=x , y-3=-2x #?
1 Answer
May 30, 2018
Explanation:
We have
1)
2)
We can use substitution, i.e. insert
Here we have another way which is basically as simple, since we have
3) from 1):
From 2):
Add 3) and 2 to get rid of the x terms:
4)
This gives
Check:
2)Left side:
Right side:
