Question

Află factorul necunoscut, folosind proba a•8=56;m•6=9;42:b=6;36:×=9;c•7=3;6•a=30.​

Answer 1

a × 8 = 56

a = 56 : 8

a = 7

Proba : 7 × 8 = 56

m × 6 = 9

m = 9 : 6

m = 1, 5

Proba : 1, 5 × 6 = 9

42 : b = 6

b = 42 : 6

b = 7

Proba : 42 : 7 = 6

36 : x = 9

x = 36 : 9

x = 4

Proba : 36 : 4 = 9

c × 7 = 3

c = 3 : 7

c = 0, 428571

Proba : 0, 428571 × 7 = 3

6 × a = 30

a = 30 : 6

a = 5

Proba : 6 × 5 = 30