Hey!
There are 9 birds in all. 5 of them are ducks. That means the fraction will be:
<em>That means your answer is 5/9</em>
Answer:
C
Step-by-step explanation:
Because you should be subtract each other by 20x to transfer from side to another side.
y = 18 or 36
-13 - 3x = -10
-13 + 10 = 3x
-3 = 3x
x = -3 : 3 = -1