Question

прошу помогите мне ​

Answer 1

$\frac{2}{5} - \frac{3}{15} = \frac{6}{15} - \frac{3}{15} = \frac{3}{15} = \frac{1}{5}$

$\frac{6}{8} + \frac{3}{10} = \frac{60}{80} + \frac{24}{80} = \frac{84}{80} = 1 \frac{4}{80} =1 \frac{1}{20}$

$\frac{4}{6} \times \frac{10}{12} = \frac{2}{3} \times \frac{5}{6} = \frac{5}{9}$

$\frac{10}{25} \div \frac{6}{50} = \frac{10}{25} \times \frac{50}{6} = \frac{10}{3} = 3 \frac{1}{3}$

$6 {}^{3} = 216$

$\sqrt{36} = 6$

$10(5x - 2) = 30 \\ 5x - 2 = 3 \\ 5x = 5 \\ x = 1$

$2(4x + 3) = 6x + 32 \\ 8x + 6 = 6x + 32 \\ 2x = 26 \\ x = 13$