Odpowiedź:
a) 1 i 3/5 -2 i 1/6= 1 i 18/30- 2 i 5/30= 1 i 18/30- 1 i 35/30= - 17/30
b) 3 i 3/8 +2 i 5/6= 3 i 9/24 + 2 i 20/24= 5 i 29/24= 6 i 5/24
d) 7/6 + ( -5/4 -4/3)= 7/6 +( -15/12- 16/12)= 14/12 - 31/12= - 17/12= - 1 i 5/12
f) - 1 i 9/16 + 11/12= - 1 i 27/48 + 44/48 = - 75/48+44/48= -31/48
j) 1/2 - 1/3 - ( 1/4- 1/5)= 3/6-2/6 - ( 5/20-4/20)= 1/6- 1/20=
= 10/60- 3/60= 7/60
Szczegółowe wyjaśnienie:
Oblicz :
Należy sprowadzić ułamki do wspólnego mianownika i wykonać działania :
a) 1 3/5 - 2 1/6 = 1 18/30 - 2 5/30 = 1 18/30 - 1 35/30 =
b) 3 3/8 + 2 5/6 = 3 9/24 + 2 20/24 = 5 29/24 =
d) 7/6 + (- 5/4 - 4/3) = 7/6 +(- 15/12 - 16/12) = 14/12 - 31/12 =
f) - 1 9/16 + 11/12 = - 1 27/48 + 44/48 = - 75/48 + 44/48 =
j) 1/2 - 1/3 - (1/4 - 1/5) = 3/6 - 2/6 - (5/20 - 4/20) = 1/6 - 1/20 =
= 10/60 - 3/60 =
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Odpowiedź:
a) 1 i 3/5 -2 i 1/6= 1 i 18/30- 2 i 5/30= 1 i 18/30- 1 i 35/30= - 17/30
b) 3 i 3/8 +2 i 5/6= 3 i 9/24 + 2 i 20/24= 5 i 29/24= 6 i 5/24
d) 7/6 + ( -5/4 -4/3)= 7/6 +( -15/12- 16/12)= 14/12 - 31/12= - 17/12= - 1 i 5/12
f) - 1 i 9/16 + 11/12= - 1 i 27/48 + 44/48 = - 75/48+44/48= -31/48
j) 1/2 - 1/3 - ( 1/4- 1/5)= 3/6-2/6 - ( 5/20-4/20)= 1/6- 1/20=
= 10/60- 3/60= 7/60
Szczegółowe wyjaśnienie:
Oblicz :
Należy sprowadzić ułamki do wspólnego mianownika i wykonać działania :
a) 1 3/5 - 2 1/6 = 1 18/30 - 2 5/30 = 1 18/30 - 1 35/30 =
= - 17/30
b) 3 3/8 + 2 5/6 = 3 9/24 + 2 20/24 = 5 29/24 =
= 6 5/24
d) 7/6 + (- 5/4 - 4/3) = 7/6 +(- 15/12 - 16/12) = 14/12 - 31/12 =
= - 17/12 = - 1 5/12
f) - 1 9/16 + 11/12 = - 1 27/48 + 44/48 = - 75/48 + 44/48 =
= - 31/48
j) 1/2 - 1/3 - (1/4 - 1/5) = 3/6 - 2/6 - (5/20 - 4/20) = 1/6 - 1/20 =
= 10/60 - 3/60 =
= 7/60