Can anyone else figure this out
So the first thing to do is get all amounts into one common unit. I will convert them all to ft.
1.8ft.
20in = 1.666ft
56cm = 56/2.54cm = 22.05in = 1.8375ft.
So from that, You would have 56cm -> 1.8ft -> 20in. for Greatest to Least.
72 = 4y
divide both sides by 4, to get y by itself
72/4 = y
y = 18