August 2018 3 19 Report
Oblicz najprostszym sposobem:
a)18*23+(-17)*23
b)13*(-15)+(-15)*(-12)
c)9:(-3)-(-15):(-3)
d)21*(-4)-(-5)*21
e)16:(-2)-4:(-2)
f)-18:(-3)+(21):3
czekam do 17:00 na odp
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