Question

Найти X:
1) 7/12 = x/60
2) 1/6 = 15/x
3) y/5 = y/5

Answer 1

$frac{7}{12} = frac{x}{60}$
$12*x=60*7$
$12x=420$
$x=420:12$
$x=35$
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$frac{1}{6} = frac{15}{x}$
$x=6*15$
$x=90$
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