oblicz: a) 2-2⅔(o,25+2½) b)|⅕-⁵/₃| c)3½% liczby 275 d)liczbe,ktorej 2%wynosi 856 e)(½)³*(½)⁻⁵/(½)⁴ f)2-(²/₃)³+(1¹/₃)² g)√36 h)³√27

a) 2-2⅔(o,25+2½) b)|⅕-⁵/₃|= 3/15 - 25/15=-22/15 c)3½% liczby 275 7/2*275/100=96/8 d)liczbe,ktorej 2%wynosi 856 2x=856*100 2x=85600|:2 x=42800 e)(½)³*(½)⁻⁵/(½)⁴=1/8*2=1/4 f)2-(²/₃)³+(1¹/₃)²=2-8/27+16/9=2-8/27+48/27=3 13/27 g)√36=6 h)³√27=3