Question

Ajutor!
Va rog frumos!
Dau coroană! ​

Answer 1

1. -8+(-12):(-3)=-8+4=-4

2. 12=2^2×3

18=2×3^2

[12;18]=2^2×3^2=4×9=36

3. 6kg............21 lei

11kg.........x lei

6x=11×21

6x=231

x=231:6

x=38,5 lei

1. ab=3×5. 14-ab=14-15=-1

ab=15

b) -1(cel corect)

2. a)90 de grade(cel corect)

3. x- numar elevi

25%x=7

25x/100=7

x/4=7

x=4×7

x=28

28-7=21 fete

c)21(răspunsul corect)