There are 19 animals in the field. Some are cows and some are ducks. There are 60 legs in all. How many of each animal are in the field? (I mostly need to know the system of equations

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

1/3 + 1/3 ≠ 2/6 because 1/3 alone = 2/6  

step by step explanation:

1/3 + 1/3 = 2/3       2/3=4/6