Question

ДОПОМОЖІТЬ!!!!!Бо я щось не розумію =///​

Answer 1

$1)7\frac{3}{4}:\frac{1}{3}=x:1\frac{5}{31};\\\\\frac{31}{4}*3=x*\frac{31}{36};\\\\\frac{93}{4}=\frac{31}{36}x;\\\\ x=\frac{93}{4}:\frac{31}{36};\\\\ x=\frac{93}{4} *\frac{36}{31} =3*9=27$

$2)\frac{39.1}{x}=\frac{2.3}{5};\\\\ x=\frac{39.1*5}{2.3}=17*5=85;$

$3)1\frac{7}{9}:1\frac{7}{27}=x:5\frac{2}{3};\\\\\frac{16}{9} :\frac{34}{27} =x:\frac{17}{3};\\\\\frac{16}{9}*\frac{27}{34} =x*\frac{3}{17} ;\\\\\frac{16*3}{34}=\frac{3}{17}x;\\\\\frac{48}{34}=\frac{3}{17}x;\\\\ x=\frac{48}{34}:\frac{3}{17}=\frac{48}{34}*\frac{17}{3}=\frac{16}{2}=8$