Efectuati:c)55 supra 44×88 supra 77×33 supra22×70 supra 25
VA ROG REPEDE!!DAU COROANA!!!

[tex] \frac{55}{44} \times \frac{88}{77} \times \frac{33}{22} \times \frac{70}{25} = [/tex]

[tex] = \frac{5}{4} \times \frac{8}{7} \times \frac{3}{2} \times \frac{14}{5} = [/tex]

[tex] = \frac{5 \times 8 \times 3 \times 14}{4 \times 7 \times 2 \times 5} = [/tex]

[tex] = \frac{5 \times 4 \times 2 \times 3 \times 14}{5 \times 4 \times 14} = [/tex]

[tex] = 2 \times 3 = \\ = 6[/tex]

Răspuns:

55/44·88/77·33/22·70/25

simplificam la primele 3 fractii si numaratorul si numitorul cu 11 iar ultima o simplificam cu 5

5/4·8/7·3/2·14/5 se simplifica pe diagonala

3·2=6