Odpowiedź :
Odpowiedź:
Szczegółowe wyjaśnienie:
5.
a) 6: (-1/2) = - 6 * 2 = -12
(-15) * 1/5 = -3
(-1/3) * 9 = -3
(-1/3) : (-5) = 1/15
b)
(-0,7) * (-100) = 70
0,09 : (-10) = - 0,009
(-2,7) : 100 = - 0,027
(-1,3) * 1000 = -1300
6.
a) 10-6+8 = 12
10-(6+8) = 10 - 14 = -4
b) 10 - 5*6 = 10 - 30 = -20
(10-5)*6 = 5*6 = 30
c) 8*7 - 6 = 56-6 = 50
8*(7-6) = 8
d) 24:6 * (-2) = 4 * (-2) = -8
24:(6 * (-2)) = 24: (-12) = -2
e) -12 + 4:2 - 8 = -12 + 2 - 8 = -18
(-12+4):2 - 8 = (-8):2 - 8 = -4 - 8 = -12
f) 11 -8:4 -10 = 11 - 2 - 10 = -1
(11-8):(4-10) = 3: (-6) = - 3/6 = - 1/2
5.
a)
[tex]6:(-\frac{1}{2}) = 6\cdot(-\frac{2}{1}) = -12\\\\(-\frac{1}{3})\cdot9 = -\frac{9}{3} = -3\\\\(-15)\cdot\frac{1}{5} = -\frac{15}{5} = -3\\\\(-\frac{1}{3}):(-5) = (-\frac{1}{3})\cdot(-\frac{1}{5}) = \frac{1}{15}[/tex]
b)
[tex](-0,7)\cdot(-100) =70\\\\(-2,7):100 = -0,027\\\\0,09:(-10) = -0,009\\\\(-1,3)\cdot1000 = -1300[/tex]
6)
a)
[tex]10-6+8 = 4+8 = 12\\\\10-(6+8) = 10-14 = -4[/tex]
b)
[tex]10-5\cdot6 = 10-30 = -20\\\\(10-5)\cdot6 = 5\cdot6 = 30[/tex]
c)
[tex]8\cdot7-6 = 56-6 = 50\\\\8\cdot(7-6) = 8\cdot1 = 8[/tex]
d)
[tex]24:6\cdot(-2) = 4\cdot(-2) = -8\\\\24:(6\cdot(-2)) = 24:(-12) = -2[/tex]
e)
[tex]-12+4:2 - 8 = -12+2-8 = -20+2 = -18\\\\(-12+4):2 - 8 = (-8):2-8 = -4-8 = -12[/tex]
f)
[tex]11-8:4 -10 =11-2-10 = 11-12 = -1\\\\(11-8):(4-10) = 3:(-6) = -\frac{3}{6} = -\frac{1}{2}[/tex]