Question

б) 8/7 = 15/х в) 7/1=12/х г) 8/1=3/х

Answer 1

$frac{8}{7} =frac{15}{x}$

$x=frac{7*15}{8}$

$x=13frac{1}{8}$

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$frac{7}{1} =frac{12}{x}$

$x=frac{12}{7}$

$x=1frac{5}{7}$

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$frac{8}{1} =frac{3}{x}$

$x=frac{3}{8}$

Answer 2

1)
8x=105
x=105/8=13 1/8

2)
7=12/x
7x=12
x=12/7=1 5/7

3)
8=3/x
8x=3
x=3/8=0,375

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