Question

213. Решите уравнения ​

Answer 1

$1) \: \: \: \: \: \frac{2x}{36} = \frac{5}{6} \\ 12x = 36 \times 5 \\ 12x = 180 \\ x = 15$

$2) \: \: \: \: \: \frac{4}{9} = \frac{3x}{54} \\ 54 \times 4 = 27x \\ 27x = 216 \\ x = 8$

$3) \: \: \: \: \: \frac{7}{21} = \frac{3x}{54} \\63x = 54 \times 7 \\ 63x = 378 \\ x = 6$

$4) \: \: \: \: \: \frac{11}{33} = \frac{2}{3x} \\ 33x = 33 \times 2 \\ 33x = 66 \\ x = 2$

$5) \: \: \: \: \: \frac{8}{5} = \frac{4x}{15} \\ 20x = 15 \times 8 \\ 20x = 120 \\ x = 6$

$6) \: \: \: \: \: \frac{9}{16} = \frac{3x}{64} \\ 48x = 64 \times 9 \\ 48x = 576 \\ x = 12$