Question

выполните действия а) -78*49+49*18 б) (-1 12-1 17)*14

Answer 1

а) -7/8 * 4/9 + 4/9 * 1/8 = 4/9 * (-7/8 +1/8) = 4/9 * (-6/8) = -1/3
б) (-1 1/2-1 1/7)*14 = (-3/2 - 8/7) * 14 = -3/2*14 - 8/7 * 14 = -21 - 16 = -37