Question

(1) с : (1 200 : 2) = 3
(2) ( 50 х 30) : у = 15

Answer 1

c=1200:2
с=600
с=60
с=1800
_______________
1800:(1200:2)=3
3=3

у=50х30
у=1500
у=1500:15
у=100
_______________
1500:100=15
15=15