Question

afla factorul necunoscut,folosind proba A)a×7=63 B)5×a=30​

Answer 1

a) :

a * 7 = 63 <=> a = 63 : 7 <=> a = 9

Verificare :

9 * 7 = 63

b) :

5 * a = 30 <=> a = 30 : 5 <=> a = 6

Verificare :

5 * 6 = 30