DAU CORONA PLS AM NEVOIE RAPID

Răspuns:
a)
7×52/91×4
364=364
echivalenta
b)
112×99/28×396
11088=11088
echivalenta
c)
115×98/23×495
11270=11385
nechivalente
d)
803×37/407×73
29711=29711
echivalenta
Coroana?