oblicz
2/5 : 2 i 1/2 * (4 i 1/5 - 1 i 3/40) + 1,35 : 2,7 = = 2/5 : 5/2 * (21/5 - 43/40) + 0,5 = = 2/5 * 2/5 * ( 168/40 - 43/40) + 0,5 = = 4/25 * (125/40) + 0,5 = = 5/10 + 0,5 = = 0,5 + 0,5 = = 1
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2/5 : 2 i 1/2 * (4 i 1/5 - 1 i 3/40) + 1,35 : 2,7 =
= 2/5 : 5/2 * (21/5 - 43/40) + 0,5 =
= 2/5 * 2/5 * ( 168/40 - 43/40) + 0,5 =
= 4/25 * (125/40) + 0,5 =
= 5/10 + 0,5 =
= 0,5 + 0,5 =
= 1