Question

Вычислите: а)-2/5: 6 б)-6: 3/12 в)-5/8: (-15) г)-2/7: 8/7 д)-2/9: (-8) е)1/45: (-2/15) ж)2: (-2/7) з) 5 целых 4/9: 1/9

Answer 1

$1)\;-\frac25:6=-\frac25\cdot\frac16=-\frac15\cdot\frac13=-\frac1{15}\\2)\;-6:\frac3{12}=-6\cdot\frac{12}3=-2\cdot12=-24\\3)\;-\frac58:(-15)=\frac58\cdot\frac1{15}=\frac18\cdot\frac13=\frac1{24}\\4)\;-\frac27:\frac87=-\frac27\cdot\frac78=-1\cdot\frac14=-\frac14\\5)\;-\frac29:(-8)=\frac29\cdot\frac18=\frac19\cdot\frac14=\frac1{32}\\6)\;\frac1{45}:\left(-\frac2{15}\right)=-\frac1{45}\cdot\frac{45}2=-\frac12\\7)\;2:\left(-\frac27\right)=-2\cdot\frac72=-7$
$8)\;5\frac49:\frac19=\frac{49}9:\frac19=\frac{49}9\cdot9=49$