Question

Zad 4. a).-2 i 1/5 + 3,3 = b). 1 i 5/6 - 3 i 1/3 = c).4,3-7,5 = d). - 4,5 - 2 i 1/4= e). - 3 i 1/6 - ( -5 i 5/6)= f). 7 i 1/3 + ( - 4 5/6) = g). - 5 i 4/7 + 7 = h). 1,23 - 9 = i). - 6 - ( - 4 i 5/9) =

Answer 1

Zadanie 4

a)-2 1/5 + 3,3= -11/5+3 3/10=-11/5+33/10=-22/10+33/10=11/10=1 1/10(1,1)

b)1 5/6- 3 1/3=11/6-10/3=11/6-20/6=-9/6=-3/2=-1 1/2 (-1,5)

c)4,3-7,5=-3,2 ale mozna tez obliczyć na ułamkach :

4 3/10-7 5/10= -3 2/10= -3 1/5

d)-4,5-2 1/4=-4 1/2-2 1/4= -9/2-9/4=-18/4-9/4=-27/4=-6 3/4 (-6,75)

e)-3 1/6- (-5 5/6)=-3 1/6 + 5 5/6=-19/6+35/6=16/6=8/3=2 2/3(2,66)(dwa minusy dają plus)

f)7 1/3 + (- 4 5/6)=22/3-29/6=44/6-29/6=15/6=5/2=2 1/2 (2,5)

g)-5 4/7+7=-1 3/7

h)1,23-9=-7,77

i)-6-(-4 5/9)=-6+4 5/9= -1 4/9

 

Mam nadzieję ,że pomogłam.

Pozdrawiam

Answer 2

a).-2 i 1/5 + 3,3 = -2,2+3,3 = 1,1

b). 1 i 5/6 - 3 i 1/3 = 11/6 - 10/3 = 11/6-20/6 = -9/6 = -3/2 = -1 i 1/2

c).4,3-7,5 = -3,2

d). - 4,5 - 2 i 1/4= -4,5-2,25 = -6,75

e). - 3 i 1/6 - ( -5 i 5/6)= -3 i 1/6+ 5 i 5/6 = -19/6 + 35/6 = 16/6 = 8/3 = 2 i 2/3

f). 7 i 1/3 + ( - 4 5/6) = 22/3 - 29/6 = 44/6 - 29/6 = 15/6 = 5/2 = 2 i 1/2

g). - 5 i 4/7 + 7 = -39/7 + 49/7 = 10/7 = 1 i 3/7

h). 1,23 - 9 = - 7,77

i). - 6 - ( - 4 i 5/9) = -6+ 4 i 5/9 = -54/9+41/9 = -13/9 = -1 i 4/9