-15-9y=39
+15 +15
-9y/-9=54/-9
y=-6
1) 9+6 = 15
15+31 = 46
2) (12.5+0) + (1+43.5)
12.5+44.5
= 57
So answer to number 1 is 46
Answer to number 2 is 57
Hi there!
Below is the fraction we are working with:

To simplify this fraction down to its lowest form, we see what number(s) can go into the numerator and the denominator evenly. We can start off with the number 2. 2 goes evenly into each number, can't it? :)
So, we can cut down
to
.
is already in it's simplest form. Now, we can see if they're equivalent. If not, we have to start all over.
Since
equals 83.3, we have to make sure
does, too.
Just divide the numerator by the denominator to see what you have.
5 ÷ 6 = 83.3 with a repeating decimal, so they're equivalent!
Hope this helps!
If you need anything else, don't just sit there - Let me know! :D
Answer:
k=30
Step-by-step explanation:
The number of mice vary inversely with cats. This is written as:

When there are 3r-19 cats, there are 2r+1 mice

When there are 6r-27 mice, there are r-5 cats.

Taking the values of k above, we have:

Therefore:

T=k/s
So k/36 = 2
k = 72
Put into original equation
t= 72/3 (s is 3)
So t is 24