Relax

Respuesta :

MaryHadALittleLamb
15x5 is the answer because if you multiply 15 and 5 you get 75.
Jennifire
Well you could find factors of 75. 5 is automatically one of them. SOmething that we could do easily in our head. 

So to equal 75, we multiply 5 and 15. 

If you multiply it out, we get back to 75!