Question

помогите пожалуйста уровнение​
даю 67 балов

Answer 1

2)

$\frac{5}{6} m + \frac{3}{4} = 1 \frac{1}{2} m - 1 \frac{1}{12} \\ \frac{5}{6} m - 1 \frac{1}{2} m = - 1 \frac{1}{12} - \frac{3}{4} \\ \frac{5}{6} m - \frac{3}{2} m = - 1 \frac{1}{12} - \frac{9}{12} \\ \frac{5}{6} m - \frac{9}{6} m = - 1 \frac{10}{12} \\ - \frac{4}{6} m = - 1 \frac{5}{6} \\ \frac{2}{3} m = 1 \frac{5}{6} \\ m = 1 \frac{5}{6} \div \frac{2}{3} \\ m = \frac{11 \times 3}{6 \times 2} \\ m = \frac{11}{4} \\ m = 2 \frac{3}{4}$

3)

$5(6 - 3x) +19 = - 4(4.5x - 4) \\ 30 - 15x + 19 = - 18x + 16 \\ 18x - 15x = 16 - 49 \\ 3x = - 33 \\ x = - 33 \div 3 \\ x = - 11$

4)

$\frac{7 - 3y}{4} = \frac{y + 6}{ - 1} \\ 4(y + 6) = - (7 - 3y) \\ 4y + 24 = - 7 + 3y \\ 4y - 3y = - 7 - 24 \\ y = - 31$