Răspuns:
a)⅘•1¼°⅖=
=⅘•⁵/4•⅖
=⁴⁰/100
=⅖
b) 4¼•(1⅔•⅗)
=¹⁷/4•(⁵/3•⅗)
=¹⁷/4•¹⁵/15
=²⁵⁵/60
=¹⁷/20
c) 2³/6•⁷/17•1⅛
=¹⁵/6•⁷/17•⁹/8
=⁹⁴⁵/816
=³¹⁵/272
