January 2019 1 21 Report
Zad.1 Oblicz.
a) 1/2+1/5=
b) 1/3+1/7=
c) 2/3+3/5=
d) 3/7+2/9=
e) 1/2-1/3=
f) 3/5-2/3=
g) 3/8-2/3=
h) 4/3-3/4=

zad.2
a) 5/9*5/9=
b) 4/3*(-2/7)=
c) 5/13*39/15=
d) 14/15*(-3/8)=

zad.3
a) 8/15:4/9=
b) -16/27:10/9=
c) 100/33:(-25/11)=
d) -320/23:32/138=

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