Question

ответ плз плиз матеша 6 класс

Answer 1

Ответ:

$x = \frac{61}{93}$

Пошаговое объяснение:

$\frac{5}{6} (\frac{1}{2} x - \frac{2}{3} ) = 3x - 2\frac{1}{4} \\\\\frac{5}{6*2} x - \frac{2 * 5}{6 * 3} = 3x - 2\frac{1}{4} \\\\3x - \frac{5}{12}x = 2\frac{1}{4}- \frac{10}{18} \\\\\frac{3*12x-5x}{12} =\frac{9}{4} - \frac{10}{18} \\\\\frac{36x - 5x}{12} = \frac{9*9}{36} - \frac{10*2}{36} \\\\\frac{31x}{12} = \frac{81-20}{36} \\\\\frac{31x}{12} = \frac{61}{36} \\\\x = \frac{61}{36} * \frac{12}{31} \\\\x = \frac{61}{31 * 3} = \frac{61}{93}$