Question

СРОЧНО! МАТЕМАТИКА 6 КЛАСС

Answer 1

$1) \frac{4}{13} = \frac{x - 10}{52} \\ 208 = 13(x - 10) \\ 16 = x - 10 \\ - x = - 10 - 16 \\ - x = - 26 \\ x = 26$

$2)9 = \frac{11}{x}. \: x≠0 \\ 9x = 11 \\ x = \frac{11}{9} \\ x = 1 \frac{2}{9} \\ x = 1.2$

$3) \frac{4}{5} \div x = 6 \div 1 \frac{3}{8} \\ \\ \frac{4}{5} \times \frac{1}{x} = 3 \times \frac{3}{4} \\ \frac{4}{5x} = \frac{9}{4} \\ 16 = 45x \\ 45x = 16 \\ x = \frac{16}{45} \\ x = 0.35$