Zrobić to co podkreślone...zad 3a) musi wyjść -4 1/3b) musi wyjść -8zad 4a) x = 3 9/32 , 1/y =

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September 2018 1 36 Report

Zrobić to co podkreślone...

zad 3

a) musi wyjść -4 1/3

b) musi wyjść -8

zad 4

a) x = 3 9/32 , 1/y = - 4/7

b) x= -19/21, 1/y = 1 8/37

Roma

Zad. 3

$23 \ : \ (-7\frac{2}{3}) -\frac{32}{24} = 23 \ : \ (-\frac{23}{3}) -\frac{4}{3} = 23 \cdot (-\frac{3}{23}) -1\frac{1}{3} = - 3 -1\frac{1}{3} = -4\frac{1}{3}$

$(-2\frac{3}{5} ) \cdot 3\frac{1}{8} + \frac{1}{8} = (-\frac{13}{5} ) \cdot \frac{25}{8} + \frac{1}{8} = -\frac{65}{8} + \frac{1}{8} = -\frac{64}{8} = -8$

Zad. 4

$x = (3\frac{1}{4} - 1,5) \cdot (-2\frac{1}{8}+\frac{1}{4}) = (\frac{13}{4} - \frac{3}{2}) \cdot (-1\frac{9}{8}+\frac{2}{8}) = (\frac{13}{4} - \frac{6}{4}) \cdot (-1\frac{7}{8}) =$

$= \frac{7}{4} \cdot (-\frac{15}{8}) = -\frac{105}{32} = -3\frac{9}{32}$

Liczba przeciwna do x to: $3\frac{9}{32}$

$y = (2,25 - 3\frac{1}{2}) \ : \ \frac{2}{3} + \frac{1}{8} = (2\frac{1}{4} - 3\frac{2}{4}) \cdot \frac{3}{2} + \frac{1}{8} = - 1\frac{1}{4} \cdot \frac{3}{2} + \frac{1}{8} =$

$= -\frac{5}{4} \cdot \frac{3}{2} + \frac{1}{8} = -\frac{15}{8} + \frac{1}{8} = -\frac{14}{8} = -\frac{7}{4}$

Liczba odwrotna do y to: $-\frac{4}{7}$

$x = (1\frac{1}{6} -\frac{1}{9}) \ : \ (1\frac{1}{3} -\frac{1}{6}) = (1\frac{3}{18} -\frac{2}{18}) \ : \ (1\frac{2}{6} -\frac{1}{6}) = 1\frac{1}{18} \ : \ 1\frac{1}{6} = \frac{19}{18} \ : \ \frac{7}{6} =$

$= \frac{19}{18} \cdot \frac{6}{7} = \frac{19}{21}$

Liczba przeciwna do x to: $-\frac{19}{21}$

$y = (\frac{1}{7} - \frac{1}{3}) \cdot 0,35 - 1\frac{1}{3} \ : \ (-1\frac{1}{2}) = (\frac{3}{21} - \frac{7}{21}) \cdot \frac{35}{100} - \frac{4}{3} \ : \ (-\frac{3}{2}) =$

$= - \frac{4}{21} \cdot \frac{7}{20} - \frac{4}{3} \cdot (-\frac{2}{3}) = -\frac{1}{15} + \frac{8}{9} = -\frac{3}{45} + \frac{40}{45} = \frac{37}{45}$

Liczba odwrotna do y to: $\frac{45}{37} = 1\frac{8}{37}$

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Podaj przeciwną do liczby x i liczbę odwrotną do y.a)x= (3 1/4 - 1,5) * ( -2 1/8 + 1/4)y= (2,25 - 3 1/2) : 2/3 + 1/8b)x= (1 1/6 - 1/9) : (1 1/3 - 1/6)y= (1/7 - 1/3) * 0,35 - 1 1/3 : (- 1 1/2)Oblicz.a) 23 : (- 7 2/3) - 32/24b) (-2 3/5) * 3 1/8 + 1/8Daje dużo pkt jak na takie zadanko więc prosze o szybkie rozwiązanie.

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