Question

4.Calculează numărul necunoscut: a147 (a x 5) : 2 = 40:4 42:(dx 3) = 21:3 (b: 3) x 6 = 52 - 4 60 - (e x 9) = 30:5 9 x(C:6) = 6 x 6 72 – 40 = (f: 3) x (40:5) - dau coroana pls​

Answer 1

Răspuns:

(a x 5) : 2 = 40:4

(a×5):2=10

a×5=20 /:5

a=4

42:(dx 3) = 21:3/:21

2:(d×3)=1:3

(d×3)×1=2×3

d×3=6

d=2

(b: 3) x 6 = 52 - 4

(b:3)×6=48 /:6

b:3=8

b=8×3=24

60 - (e x 9) = 30:5

60-6=e×9

54=e×9/:9

e=6

9 x(c:6) = 6 x 6 /:9

c:6=2×2/:2

c:3=2

c=6

72 – 40 = (f: 3) x (40:5)

32=(f:3)×8

f:3=32:8=4

f=12