Damiankaczeesk
Rozwiązane

1 3/4 + 5/6 =

2 3/4 - 7/12 =

1 5/7 X 2 1/4 =

5 1/2 : 1 3/8

Pomocy​



Odpowiedź :

Basetla

[tex]1\frac{3}{4}+\frac{5}{6} = 1\frac{9}{12}+\frac{10}{12} = 1\frac{19}{12} = 2\frac{7}{12}\\\\2\frac{3}{4}-\frac{7}{12} = 2\frac{9}{12} -\frac{7}{12} = 2\frac{2}{12} = 2\frac{1}{6}\\\\1\frac{5}{7}\times2\frac{1}{4} = \frac{12}{7}\times\frac{9}{4} = \frac{3}{7}\cdot9 = \frac{27}{7} = 3\frac{6}{7}\\\\5\frac{1}{2}:1\frac{3}{8} = \frac{11}{2}:\frac{11}{8} = \frac{11}{2}\cdot\frac{8}{11} = \frac{8}{2} = 4[/tex]

Odpowiedź:

1 i 3/4 + 5/6 = 1 i 9/12 + 10/12 = 1 i 19/12 = 2 i 7/12

2 i 3/4 - 7/12 = 2 i 9/12 - 7/12 = 2 i 2/12 = 2 i 1/6

1 i 5/7 * 2 i 1/4 = 12/7 * 9/4 = 27/7 = 3 i 6/7   skracamy 12 i 4 przez 4

5 i 1/2 : 1 i 3/8 = 11/2 : 11/8 = 11/2 * 8/11 = 4   skr 11 i 11 przez 11  a  8 i 2 przez 2

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