ГДЗ Математика 6 клас Істер — Вправа 1304

1) $4,7a - 1\frac{5}{6}a + 2\frac{1}{2}a = (7,2 - 1\frac{5}{6})a = 5\frac{11}{30}a;$

2) $-2\frac{1}{3}b + 3\frac{5}{6}b - 4\frac{1}{2}b = (-2\frac{2}{6} + 3\frac{5}{6} - 4\frac{3}{6})b = -3b;$

3) $-1\frac{5}{6}x + 2\frac{4}{9}y + \frac{3}{4}x - \frac{7}{12}y = -1\frac{1}{12}x + 1\frac{31}{36}y;$

4) $-4\frac{2}{7}c + 2\frac{1}{3}m + 9\frac{9}{14}c - 5\frac{4}{9}m = 5\frac{5}{14}c - 3\frac{1}{9}m.$