Answer:
4 or-1- i dont know
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
Since you are trying to make x on its own, you are trying to get rid of the co-efficient. The co-efficient is three, so you divide 3 by 3, which would equal one, leaving x on its own. Whatever you do to one side you do to the other, so you would divide 27 by 3 as well.
x = 9
Answer:
r=12
S=24
Step-by-step explanation:

I hope I helped you^_^
Check the picture below.
notice is simply a 5x4 rectangle, and surely you know how to get its area.
Answer:
7 + (-3)
Step-by-step explanation:
Adding -3 to 7 is the same as subtracting 3 from 7.