Question

ПОМОГИТЕ!!!ДАЮ 100 БАЛЛОВ

Answer 1

1.

$\frac{1}{3} x=7\frac{3}{4} \cdot 1\frac{5}{31} \\\\\frac{1}{3} x=\frac{31}{4} \cdot\frac{36}{31} \\\\\frac{1}{3} x=9\\\\x=9:\frac{1}{3}\\\\ x=9\cdot 3\\\\x=27}$

2.

$2,3x=5\cdot 39,1$

$2,3x=195,5$

$x=195,5:2,3$

$x=85$

3.

$1\frac{7}{27}\cdot x=1\frac{7}{9} \cdot 5\frac{2}{3}\\\\ \frac{34}{27}x=\frac{16}{9} \cdot \frac{17}{3} \\\\x=\frac{16}{9} \cdot \frac{17}{3}:\frac{34}{27} \\\\x=\frac{16}{9} \cdot \frac{17}{3}\cdot \frac{27}{34}\\\\x=8$