Răspuns:
Explicație pas cu pas:
a)210/120=21/12=7/4
b)144/180=36/45=12/15
c)196/140=40/35=8/7
d)252/189=36/27=12/9=4/3
f) 315/270=35/30=7/10
g)324/243=36/27=4/3
h)240/336=30/42=5/7
i)225/600=15/40=3/8
j)504/420=84/70=12/10=6/5
k)720/576=80/64=10/8=5/4
l)650/845=50/65=10/13
