Question

Proszę!! Potrzebuje na jutro!!

/ - Kreska ułamkowa (jak coś)

a) 1/7 + 5/14
b) 3/4 + 5/12
c) 8/9 + 5/18

d) 1/3 + 3/4
e) 3/5 - 1/2
f) 1 1/2 - 1/3

g) 1 1/2 + 3/8
h) 1 1/3 - 2/9
i) 2 3/5 - 7/10

j) 5/6 - 1/4
k) 1 1/6 - 7/9
l) 2 3/8 - 1 5/6

7 klasa. Dam dużo!! pktl!
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Answer 1

Odpowiedź:

a) 1/7 + 5/14 = 2/14 + 5/14 = 7/14 = 1/2

b) 3/4 + 5/12 = 9/12 + 5/12 = 14/12 = 1 2/12 = 1 1/6

c) 8/9 + 5/18 = 16/18 + 5/18 = 21/18 = 1 3/18 = 1 1/6

d) 1/3 + 3/4 = 4/12 + 9/12 = 13/12 = 1 1/12

e) 3/5 - 1/2 = 6/10 - 5/10 = 1/10

f) 1 1/2 - 1/3 = 3/2 - 1/3 = 9/6 - 2/6 = 7/6 = 1 1/6

g) 1 1/2 + 3/8 = 3/2 + 3/8 = 12/8 + 3/8 = 15/8 = 1 7/8

h) 1 1/3 - 2/9 = 4/3 - 2/9 = 12/9 - 2/9 = 10/9 = 1 1/9

i) 2 3/5 - 7/10 = 13/5 - 7/10 = 26/10 - 7/10 = 21/10 = 2 1/10

j) 5/6 - 1/4 = 10/12 - 3/12 = 7/12

k) 1 1/6 - 7/9 = 7/6 - 7/9 = 21/18 - 14/18 = 7/18

l) 2 3/8 - 1 5/6 = 19/8 - 11/6 = 57/24 - 44/24 = 13/24

Szczegółowe wyjaśnienie:

Answer 2

Odpowiedź:

Szczegółowe wyjaśnienie:

a)1/7+5/14=2/14+5/14=7/14=1/2

b)3/4+5/12=9/12+5/12=14/12=1 i 2/12=1 i 1/6

c)8/9+5/18=16/18+5/18=21/18=1 i 3/18=1 i 1/6

d)1/3+3/4=4/12+9/12=13/12=1 i 1/12

e)3/5-1/2=6/10+5/10=1/10

f)1 i 1/2-1/3=3/2-1/3=9/6-2/6=7/6=1 i 1/6

g)1 i 1/2+3/8=1 i 4/8+3/8=1 i 7/8

h)1 i 1/3-2/9=1 i 3/9-2/9=1 i 1/9

i)2 i 3/5-7/10=2 i 6/10-7/10=1 i 16/10-7/10=1 i 9/10

j)5/6-1/4=10/12-3/12=7/12

k)1 i 1/6-7/9=1 i 3/18-14/18=21/18-14/18=7/18

l)2 i 3/8-1 i 5/6=2 i 9/24-1 i 20/24=1 i 33/24-1 i 20/24=13/24