Question

AFLATI VALOAREA lui a:

40:a=8
54:a=9
a×5=45​

Answer 1

Salutare!:)

a•8=56
a=56:8
a=7
v: 7•8=56

81:a=9
a=81:9
a=9
v: 81:9=9

42:a=6
a=42:6
a=7
v: 42:7=6

(142-79):a=9
63:a=9
a=63:9
a=7
v: (142-79):7=63:7=9

(43+57):a=10
100:a=10
a=100:10
a=10
v: (43+57):10=100:10=10

(285-237):a=6
48:a=6
a=48:6
a=8
v: (285-237):8=48:8=6

Answer 2

a×8=56

a=56:8

a=7

Verificarea:7×8=56

81:a=9

a=81:9

a=9

Verificarea:81:9=9

42:a=6

a=42:6

a=7

Verificarea:42×7=6

(142-79):a=9

63:a=9

a=63:9

a=7

Verificarea:(142-79):7=9

(43+57):a=10

100:a=10

a=100:10

a=10

Verificarea:(43+57):a=10

(285-237):a=6

48:a=6

a=48:6

a=8

Verificarea:(285-237):a=8