Matematyka
Martynka0195
2017-06-25 13:44:34
2 2/3-5 1/4+0,75 b 1 7/12+1 5/6 -1/2:2/3
Odpowiedź
kevinozw
2017-06-25 18:09:03

[latex]2cfrac{2}{3}-5cfrac{1}{4}+0,75=2cfrac{8}{12}-5cfrac{3}{12}+cfrac{9}{12}=cfrac{32}{12}-cfrac{63}{12}+cfrac{9}{12}=cfrac{41}{12}-cfrac{63}{12}=-cfrac{22}{12}=-1cfrac{10}{12}=-1cfrac{5}{6}[/latex] [latex]1cfrac{7}{12}+1cfrac{5}{6}-cfrac{1}{2}:cfrac{2}{3}=1cfrac{7}{12}+1cfrac{10}{12}-cfrac{1}{2}cdotcfrac{3}{2}=2cfrac{17}{12}-cfrac{3}{4}=2cfrac{17}{12}-cfrac{9}{12}=2cfrac{8}{12}=2cfrac{2}{3}[/latex]

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