Treść zadania
Autor: CieniaszMaty Dodano: 14.10.2012 (20:08)
a) -1 5/6 + 3 7/10=
b) -12 3/8 + 5 5/6=
c) -3 2/3 - 2 4/15=
d) -3 3/4 - 5 7/18=
e) 4 3/8 - 5 7/10=
f) 2 1/16 - 5 5/6=
g) 2 3/10 - 4 1/25=
h) 3 5/6 - 5 2/9=
i) 3/5 - 5/6 -14/15=
j) 2/3 - 3/10 - 7/20=
k) 1/6 - 3/4 - 5/9=
l) 4/15 - 4/9 - 4/25=
m) 1 3/4 - 2 1/6 - 3 2/9=
n) 2 1/4 - 3 1/10 - 1 7/25=
o) 2 3/5 - 3 2/3 - 1 3/10=
p) 3 3/7 - 4 5.21 - 2 3/14-
r) 2 1/6 - (3 3/5 + 1 1/3)=
s) 4 1/2 - (5 3/7 - 1 3/14)=
t) 3 2/15 - (1 3/10 + 4 3/20)=
u) 2 1/8 - (1 2/7 - 3 1/28)=
Zadanie jest zamknięte. Autor zadania wybrał już najlepsze rozwiązanie lub straciło ono ważność.
Rozwiązania
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sonar 14.10.2012 (21:01)
a)
-1 i 5/6 + 3 i 7/10=
= - 1 i 25/30 + 3 i 21/30 =
= 1 i 26/30=
= 1 i 13/15
b)
-12 i 3/8 + 5 i 5/6=
= - 12 i 9/24 + 5 i 20/24=
= - 6 i 13/24
c)
-3i 2/3 - 2 i 4/15=
= - 3 i 10/15 - 2 i 4/15=
= - 5 i 14/15
d)
-3 i 3/4 - 5 i 7/18=
= - 3 i 27/36 - 5 i 14/36 =
= - 8 i 41/36=
= - 9 i 5/36
e)
4 i 3/8 - 5 i 7/10=
= 4 i 15/40 - 5 i 28/40=
= - 1 i 13/24
f)
2 i 1/16 - 5i 5/6=
= 2 i 3/48 - 5 i 40/48=
= - 3 i 37/40
g)
2 i 3/10 - 4 i 1/25=
= 2 i 15/50 - 4 i 2/50=
= - 1 i 37/50
h)
3 i 5/6 - 5 i 2/9=
= 3 i 15/18 - 5 i 4/18=
= - 1 i 7/18
i)
3/5 - 5/6 -14/15=
= 18/30 - 25/30 - 28/30=
= - 7/30 - 28/30=
= - 35/30=
= - 1 i 5/30=
= - 1 i 1/6
j)
2/3 - 3/10 - 7/20=
= 40/60 - 18/60 - 21/60=
= 22/60 - 21/60=
= 1/60
k)
1/6 - 3/4 - 5/9=
= 6/36 - 27/36 - 20/36=
= - 21/36 - 20/36=
= - 42/36=
= - 1 i 6/36=
= - 1 i 1/6
l)
4/15 - 4/9 - 4/25=
= 60/225 - 100/225 - 36/225=
= - 40/225 - 36/225=
= - 76/225
m)
1 i 3/4 - 2 i 1/6 - 3 i 2/9=
= 1 i 27/36 - 2 i 6/36 - 3 i 8/36=
= - 15/36 - 3 i 8/36=
= - 3 i 23/36
n)
2 i 1/4 - 3 i 1/10 - 1 i 7/25=
= 2 i 25/100 - 3 i 10/100 - 1 i 28/100=
= - 85/100- 1 i 28/100=
= - 1 i 113/100=
= - 2 i 13/100
o)
2 i 3/5 - 3 i 2/3 - 1 i 3/10=
= 2 i 18/30 - 3 i 20/30 - 1 i 9/30 =
= - 1 i 22/30 - 1 i 9/30=
= - 2 i 31/30=
= - 3 i 1/30
p)
3 i 3/7 - 4 i 5/21 - 2 i 3/14 =
= 3 i 18/42 - 4 i 10/42 - 2 i 9/42=
= - 34/42 - 2 i 9/42 =
= - 2 i 43/42=
= - 3 i 1/42
r)
2 i 1/6 - (3 i 3/5 + 1 i 1/3)=
= 2 i 1/6 - ( 3 i 9/15 + 1 i 5/15)=
= 2 i 1/6 - 4 i 14/15=
= 2 i 5/30 - 4 i 28/30=
= - 2 i 23/30
s)
4 i 1/2 - (5 i 3/7 - 1 i 3/14)=
= 4 i 1/2 - ( 5 i 6/14 - 1 i 3/14)=
= 4 i 1/2 - 4 i 3/14=
= 4 i 7/14 - 4 i 3/14=
= 4/14
t)
3 i 2/15 - (1 i 3/10 + 4 i 3/20)=
= 3 i 2/15 - ( 1 i 6/20 + 4 i 3/20)=
= 3 i 2/15 - 5 i 9/20=
= 3 i 8/60 - 5 i 27/60=
= - 2 i 19/60
u)
2 i 1/8 - (1 i 2/7 - 3 i 1/28)=
= 2 i 1/8 - ( 1 i 8/28 - 3 i 1/28)=
= 2 i 1/8 - (- 1 i 21/28)=
= 2 i 1/8 + 1 i 21/28=
= 2 i 1/8 + 1 i 3/4=
= 2 i 1/8 + 1 i 6/8=
= 3 i 7/8
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