Wielka ilość punktów :) Zapraszam ;P1. Oblicz:a) b) c) d) e) f) Jeśli ktoś weźmie punkty bez odpowie.... Question from @MrPanczo

heh

=(15/4 + 11/8)* 1/2=

=(30/8 +11/8)* 1/2=

=41/8 * 1/2=

=41/16=

=2 i 9/16

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=(5/4 - 8/3)*6=

=(15/12 - 32/12)*6=

=-18/12 * 6=

=-18/2=

=-9

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=-8/5 * 15/56 + 17/14=

=-3/7 + 17/14=

=-6/14+17/14=

=11/14

===================

=(3/10 + 8/10):(91/15 - 10/15)=

=11/10 : 81/15=

=11/10 * 15/81=

=11/27

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=[8/5 - 2/3]:[8/5 * 2/3]=

=[24/15 - 10/15]:[16/15]=

=14/15 * 15/16=

=7/8

===================

=[24/5 * 15/16] - [9/4 * 5/27]=

=9/2 - 5/12=

=54/12 - 5/12=

=49/12=

=4 i 1/12

1 votes Thanks 0

Dalamar1024

W każdym zadaniu najpierw będe zamieniał ułammek dziesietny na zwykły

Odp 1a )

$(3,75 + 1\frac{3}{8}) :2 = (3 \frac{3}{4} + 1\frac{3}{8}) :2$

$= (3 \frac{6}{8} + 1\frac{3}{8}) :2 = (4 \frac{9}{8}) :2 = (5 \frac{1}{8}) :2$

$= \frac{41}{8} :2 = \frac{41}{8} * \frac{1}{2} = \frac{41}{16} = 2 \frac{9}{16}$

$1,25 - 2 \frac{2}{3} * 6 = 1 \frac{1}{4} - \frac{8}{3} * 6 = 1 \frac{1}{4} - \frac{48}{3} = 1 \frac{1}{4} - 16 = \frac{1}{4} - 15$

$= 14 \frac{3}{4}$

$= -1\frac{3}{5}:\frac{56}{15}+1\frac{3}{14} = -\frac{8}{5}*\frac{15}{56}+1\frac{3}{14} = -\frac{24}{56}+1\frac{3}{14} = -\frac{6}{14}+1\frac{3}{14}$

= \frac{11}{14} $= \frac{11}{14}$

$(0,3+\frac{4}{5}):(6\frac{1}{15}-\frac{2}{3}) = (\frac{3}{10}+\frac{4}{5}):(6\frac{1}{15}-\frac{2}{3})$ $= (\frac{3}{10}+\frac{8}{10}):(5\frac{16}{15}-\frac{10}{15}) = \frac{11}{10}:5\frac{6}{15} = \frac{11}{10}:\frac{81}{15} = \frac{11}{10}*\frac{15}{81}$ = \frac{33}{162} = \frac{11}{54} $= \frac{33}{162} = \frac{11}{54}$

$\frac{1,6-\frac{2}{3}}{1,6*\frac{2}{3}} = \frac{1\frac{3}{5}-\frac{2}{3}}{1\frac{3}{5}*\frac{2}{3}} = \frac{1\frac{9}{15}-\frac{10}{15}}{\frac{8}{5}*\frac{2}{3}} = \frac{\frac{14}{15}}{\frac{16}{15}} = {\frac{14}{15}}*{\frac{15}{16}} = \frac{14}{16}} = \frac{7}{8}}$

$\frac{4,8}{1\frac{1}{15}}-\frac{2\frac{1}{4}}{5,4} = \frac{4\frac{4}{5}}{1\frac{1}{15}}-\frac{2\frac{1}{4}}{5\frac{2}{5}} = \frac{\frac{24}{5}}{\frac{16}{15}}-\frac{\frac{9}{4}}{\frac{27}{5}} = \frac{24}{5} * \frac{15}{16}} - \frac{9}{4} * \frac{9}{27}$

$skracasz = \frac{3}{1} * \frac{3}{2}} - \frac{1}{4} * \frac{9}{3}$

$= \frac{9}{2} - \frac{9}{12} = \frac{54}{12} - \frac{9}{12} = \frac{42}{12} = \frac{7}{2} = 3,5$

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1. Oblicz:a) b) c) d) e) f)

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