Question

On Lana's phone 4⁄7 of the pictures were selfies. Of the other pictures on her phone 1⁄3 were of her cat. If she has 252 pictures on her phone, how many are not of her cat or selfies?

Answer 1

Assuming I did my math right, 24.

Add 1/3 and 4/7 
(1/3)+(4/7)= (19/27)

Make a proportion:
(19/21)*(x/252)
x = 228

Subtract 228 from 252
252 - 228 = 24