Question

5,1 si 2 va rog frumos mult de tot​

Answer 1

Explicație pas cu pas:

5) (4,2:0,2)•8,2=21•8,2=172,2

1) [(1/4+2/3)•3/4-3/16]•1/3=[(3/12+8/12)•3/4-3/16]•1/3=(11/12•3/4-3/16)•1/3=(11/16-3/16)•1/3=8/16•1/3=1/2•1/3=+/6

2) c=2,5(caiet)

C=14,5(carte)

3c+2C+r(rest)=40

7,5+29+r=40

36,5+r=40

r=3,5lei