Answer:
-3
Step-by-step explanation:
Put it in Desmos and look at the graph virtually so you can have a better idea
So, if k/9=3/9, then k=3, because it is a variable substituting 3. :D Hope I could help!
90=6x+3x
90=9x
90/9=x
10=x
3x=3*10=30
6x=6*10=60
hope this helped
