If Alan knows one already, there is 3 more left for him to possibly know
Answer:
B
Step-by-step explanation:
Answer:c
15x - 4
Step-by-step explanation:
15x - 4
Answer:
Infinitely many solutions.
Step-by-step explanation:
Let's solve your system by elimination.
x−3y=9;−x+3y=−9
x−3y=9
−x+3y=−9
Add these equations to eliminate x:
0=0
<u>Answer:</u>
Infinitely many solutions.