Write in 30/50 in simplest form.

3/5

Step-by-step explanation:

It is 3/5 because you can divide by 10 on the top and bottom. 30/50=3/5

Find the conman denominator for 30/50. What goes into both of them? What times what equals 30, and when you find that out then it'll work with 50 too. If it doesn't then it can't be reduced anymore. Try to figure it out, I know you can. Albert Einstein figured out a whole formula by himself, so trust me you can figure this out.

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional