Oblicz.
a) 3/4+5/6+7/12=
b) 25/36-5/9+1/2=
c) 1/3+2/5+9/10=
d) 4/15-1/6+4/5=
Ps to jest dodawanie i odejmowanie ułamków zwykłych z różnymi mianownikami.
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a) 9/12 + 10/12 + 7/12 = 26/12 = 2 2/12
b) 25/36-5/9+1/2=25/36 - 20/36 + 18/36 = 23/36
c) 1/3+2/5+9/10=10/30 + 12/30 + 10/30 = 32/30 =1 2/30
d) 4/15-1/6+4/5=8/30 - 5/30 + 24/30 = 27/30
licze na naj ;)
a) 3/4 = 9/12
5/6= 10/12
9/12+ 10/12+ 7/12= 26/12=2 całe i 2/12 = 2 całe i 1/6
b) 5/9= 20/36
1/2= 18/36
25/36-20/36+18/36= 23/36
c) 1/3= 10/30
2/5= 12/30
9/10=27/30
10/30+12/30+27/30= 49/30= 1 cała 19/30
d) 4/15 = 16/60
1/6= 10/60
4/5= 48/60
16/60-10/60+48/60= 54/60= 27/30= 9/10