Ответ:1. y=4 2. y=32 3. y=5 4. y=120

Пошаговое объяснение:

Verified answer

Ответ:

1)

[tex]y = 4[/tex]

2)

[tex]y = 22[/tex]

3)

[tex]y = 5[/tex]

4)

[tex]y = 120[/tex]

Пошаговое объяснение:

1)

[tex] \frac{12}{27} = \frac{y}{9} [/tex]

[tex] \frac{y}{9} = \frac{12}{27} [/tex]

[tex]y = \frac{12 \times 9}{27} = \frac{108}{27} = 4[/tex]

2)

[tex] \frac{y}{84} = \frac{8}{21} [/tex]

[tex]y = \frac{8 \times 84}{21} = \frac{672}{21} = 22[/tex]

3)

[tex] \frac{14}{y} = \frac{98}{35} [/tex]

[tex] \frac{y}{14} = \frac{35}{98} [/tex]

[tex]y = \frac{35 \times 14}{98} = \frac{490}{98} = 5[/tex]

4)

[tex] \frac{14}{15} = \frac{112}{y} [/tex]

[tex] \frac{15}{14} = \frac{y}{112} [/tex]

[tex] \frac{y}{112} = \frac{15}{14} [/tex]

[tex]y = \frac{112 \times 15}{14} = \frac{1680}{14} = 120[/tex]