А) –28 : (7 – 14) – 10 = -28 : (-7) - 10 = 4 - 10 = -6
б) 1/4 · (–2,8) + (–5,2) · 0,25 = -0.7 + (-1.3) = -2
в) 38 - 1 1/17 · 34 - 2.8 = 38 - (1 + 1/17) · 34 - 2.8 = 38 - (17/17 + 1/17) · 34 - 2.8 = 38 - (18/17) · 34 - 2.8 = 38 - 36 + 2.8 = 4.8
А) –28 : (7 – 14) – 10 = -28 : (-7) - 10 = 4 - 10 = -6
б) 1/4 · (–2,8) + (–5,2) · 0,25 = -0.7 + (-1.3) = -2
в) 38 - 1 1/17 · 34 - 2.8 = 38 - (1 + 1/17) · 34 - 2.8 = 38 - (17/17 + 1/17) · 34 - 2.8 = 38 - (18/17) · 34 - 2.8 = 38 - 36 + 2.8 = 4.8