Question

Salut am si eu nevoie de rezolvarea completa de la ex:7 8 10 11

Answer 1

Răspuns

Ex7.

a-b<=6

a<=6+b

Daca b=0 a<=6 a={1,2,3,4,5,6}

Daca b=1 a<=7 a={1,2,3,4,5,6,7}

Daca b=2 a<=8 a={2,3,4,5,6,7,8}

Daca b=3 a<=9 a={3,4,5,6,7,8,9}

Daca b=4 a<=9 a={4,5,6,7,8,9}

Daca b=5 a<=9 a={5,6,7,8,9}

Daca b=6 a<=9 a={6,7,8,9}

Daca b=7 a<=9 a={7,8,9}

Daca b=8 a<=9 a={8,9}

Daca b=9 a<=9 a={9}

Deci numerele ab sunt:

10,20,30,40,50,60,

11,21,31,41,51,61,71,

22,32,42,52,62,72,82,

33,43,53,63,73,83,93,

44,54,64,74,84,94,

55,65,75,85,95,

66,76,86,96,

77,87,97,

88,98,

99.

Ex.8

4x+1<=9

4x<=8

x<=2

x={1,2}

Ex.10

I zi x pagini

II zi (x-10) pagini

III zi (x-20) pagini

IV zi (x-30) pagini

X+X-10+X-20+X-30=120

4X=180

X=45 pagini are carte