Răspuns:
3/5·7=21/5
2/7·6=12/7
7/11·3/4=21/44
5/18·7/10=35/180=7/36
se inmultesc numaratorii si numitorii intre ei
a)
3/5×7 = 3×7/5 = 21/5
b)
2/7×6 = 2×6/7 = 12/7
f)
7/11×3/4 = 7×3/11×4 = 21/44
g)
5/18×7/10 = 5×7/18×10 = 35⁽⁵/180=7/36
