a) 46x - 29y - y - 17x = (46 - 17)x + (-29 - 1)y = 29x - 30y
Ответ: 29x - 30y
б) -13a - 16b + a - b + 9c = (-13 + 1)a + (-16 - 1)b + 9c = -12a - 17b + 9c
Ответ: -12a - 17b + 9c
в) 0,1a + 2,8b - 4,3c - 1,9b - 2,3a + c = (0,1 - 2,3)a + (2,8 - 1,9)b + (-4,3 + 1)c = -2,2a + 0,9b - 3,3c
Ответ: -2,2a + 0,9b - 3,3c
a) -0,3(2n - 1,5) + \(\frac{5}{6}\)(\(\frac{2}{5}\) - 3n) = -0,3 ⋅ 2n + (-0,3) ⋅ (-1,5) + \(\frac{5}{6}\) ⋅ \(\frac{2}{5}\) - \(\frac{5}{6}\) ⋅ 3n = -0,6n + 0,45 + \(\frac{1}{3}\) - \(\frac{5}{2}\)n = -0,6n + 0,45 + 0,333 - 2,5n = -3,1n + 0,783
Ответ: -3,1n + 0,783
б) \(\frac{2}{5}\)(\(\frac{7}{8}\) - 5n) - 0,6(1\(\frac{1}{6}\) + 4n) = \(\frac{2}{5}\) ⋅ \(\frac{7}{8}\) - \(\frac{2}{5}\) ⋅ 5n - 0,6 ⋅ 1\(\frac{1}{6}\) - 0,6 ⋅ 4n = \(\frac{7}{20}\) - 2n - \(\frac{7}{5}\) - 2,4n = \(\frac{7}{20}\) - \(\frac{28}{20}\) - 4,4n = -\(\frac{21}{20}\) - 4,4n = -1,05 - 4,4n
Ответ: -1,05 - 4,4n