wykonaj podane działania : uwaga ! '/ ' = kreska ułamkowa a) 18/7 * (-6/25) * 35/36 b) 8/15 * (-20/0) * (-81/64) c) -6/7 :(-2 i 2/3) * 1 i 5/9 d) 1 i 5/6 * 4 i 1/2 : (-8 i 1/4 )
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a) -21/5=-4 1/5
b)-108/0
c)1/2
d)-1