Question

11. Determinati, in fiecare caz, numerele naturale x,știind că:
b) X+3 <11,x< 11 -3
c) x+7 <13
d) x-3<6
e) 4+ x< sau egal cu 10
f)2+x< sau egal cu 12
g) x +17 > 23
h) x+21> sau egal cu 43
i) 4*x <24
*VA ROGG REPEDE DAU COROANA SI DE TOATEEEE PPLSSSS*

Answer 1

Răspuns:

b) x<8, x={0, 1,...,7}

c) x<13-7

x<6, x={0,1,..,5}

d) x<6+3

x<9

x={0,1...,8}

e) x<=10-4

x<=6

x={0,1,..,5,6}

f)

x<=12-2

x<=10

x={0, 1,...,10}

g) x>23-17

x>6

x={7, 8,...} intersectat cu N

h) x>=43-21

x>=22

x={22, 23,....} intersectat cu N

i) x<24/4

x<6

x={0, 1,...,5}

Answer 2

Răspuns:

Explicație pas cu pas:

b) x + 3 < 11

x < 11 -3

x < 8

x = {0, 1, 2, 3, 4, 5, 6, 7}

_____________

c) x + 7 < 13

x < 13 - 7

x < 6

x = {0, 1, 2, 3, 4, 5}

______________

d) x - 3 < 6

x < 6 + 3

x < 9

x = {0, 1 2, 3, 4, 5, 6, 7, 8}

________________

e) 4 + x ≤ 10

x ≤  10 - 4

x ≤  6

x = {0, 1, 2, 3, 4, 5, 6}

__________________

f) 2 + x ≤ 12

x ≤ 12 - 2

x ≤ 10

x = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

________________

g) x + 17 > 23

x > 23 - 17

x > 6

x = {7, 8, 9 ,,,,,,+∞}

_________________

h) x + 21 ≥ 43

x ≥ 43 - 21

x ≥ 22

x = {22, 23, 24 ,,,,,,+∞}

___________________

i) 4*x < 24

x < 24 : 4

x < 6

x = {0, 1, 2, 3, 4, 5}