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Na jutro potrzebuje DAJE NAJ​

Na Jutro Potrzebuje DAJE NAJ class=

Odpowiedź :

Frxosinaviz

Odpowiedź:

a)

1/5 * 7/8 = 7/40

b)

3/7 * 5/8 = 15/56

2/5 * 13/7 = 26/35

c)

3/4 * 17/19 = 51/76

1/4 * 7/6  = 7/24

d)

5/3 * 13/4 = 65/12

2/9 * 17/9 = 34/81

Pozdrawiam,

Naj pls

AstraySpirit2308viz

a)

[tex]\dfrac{3}{5}\cdot\dfrac{4}{7}=\dfrac{3\cdot4}{5\cdot7}=\dfrac{12}{35}\\\\\\\dfrac{1}{5}\cdot\dfrac{7}{8}=\dfrac{1\cdot7}{5\cdot8}=\dfrac{7}{40}[/tex]

b)

[tex]\dfrac{3}{7}\cdot\dfrac{5}{8}=\dfrac{3\cdot5}{7\cdot8}=\dfrac{15}{56}\\\\\\\dfrac{2}{5}\cdot\dfrac{13}{7}=\dfrac{2\cdot13}{5\cdot7}=\dfrac{26}{35}[/tex]

c)

[tex]\dfrac{3}{4}\cdot\dfrac{17}{19}=\dfrac{3\cdot17}{4\cdot19}=\dfrac{51}{76}\\\\\\\dfrac{1}{4}\cdot\dfrac{7}{6}=\dfrac{1\cdot7}{4\cdot6}=\dfrac{7}{24}[/tex]

d)

[tex]\dfrac{5}{3}\cdot\dfrac{13}{4}=\dfrac{5\cdot13}{3\cdot4}=\dfrac{65}{12}=5\dfrac{5}{12}\\\\\\\dfrac{2}{9}\cdot\dfrac{17}{9}=\dfrac{2\cdot17}{9\cdot9}=\dfrac{34}{81}[/tex]

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