Question

$1) \frac{1}{x} = \frac{5}{8} \ \\ \\ \\ 2) \frac{1}{y} = \frac{2}{7} \\ \\ \\ 3) \frac{1}{z} = \frac{2}{5} \\ \\ 4) \frac{2}{x} = \frac{1}{3} \\ \\ 5) \frac{3}{y} = \frac{5}{6} \\ \\ 6) \frac{4}{x} = \frac{8}{9}$
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Answer 1

Ответ:

Пошаговое объяснение:

1)

5*x = 8*1

5x = 8

x = 8:5

x = 1,6

2)

2*y = 7*1

2y = 7

y = 7:2

y = 3,5

3)

2*z = 5*1

2z = 5

z = 5:2

z = 2,5

4)

1*x = 3*2

x = 6

5)

5*y = 6*3

5y = 18

y = 18:5

y = 3,6

6)

8*x = 9*4

8x = 36

x = 36:8

x = 4,5

Answer 2

1) 1•8=x•5
x=1•8:5
х=8:5
x=1,6

2) 1•7=y•2
y= 1•7:2
y=7:2
y=3,5