zad1. wykonaj dzialania (ułamki ' / ' ) :
a] 3/7+5/7=
b] 5/9 +1/6=
c]1i 2/3 + 1i 3/4=
d] 16/7 - 4/17
e]5/9 - 2/7=
f]2i 1/3 - 3/4=
g]4/15 * 5/12=
h]10/23 * 0,23=
i]1i 1/4 * 0,1=
j]4/5 : 2/5=
k]3/4 : 0,2=
l]1i 2/5 : 0,3=
.
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a) 3/7 + 5/7= 8/7= 1 i 1/7
b) 5/9 + 1/6= 10/18 + 3/18=13/18
c) 1 i 2/3 + 1 i 3/4= 5/2+ 7/4= 10/4+7/4= 17/4= 4 i 1/4
d) 16/7 - 4/7= 12/7= 1 i 5/7
e) 5/9 -2/7= 35/63- 18/63= 17/63
f) 2 i 1/3 -3/4= 5/3 -3/4= 20/12-9/12=11/12
g) 4/15 * 5/12= 1/12
h) 10/23 * 0,23= 10/23 * 23/100=1/10
i) 1 i 1/4 *o,1= 5/4* 1/10=1/8
j) 4/5 :2/5= 4/5 * 5/2=2
k) 3/4 :0,2= 3/4 :1/5=3/4 *5=15/4=3 i 3/4
l) 1 i 2/5 :0,3= 7/5 : 3/10= 7/5* 10/3= 14/3= 4 i 2/3