-2,375×(-2 4/7)×3,2×(-7/18)×8/19=
помогите плиз
очень надо.

1) -2,375 * -2 4/7 = 2 3/8 * 2 4/7 = 19/8 * 18/7 = 19/4 * 9/7 = 171/282) 171/28 * 3,2 = 171/28 * 16/5 = 171/7 * 4/5 = 684/353) 684/35 * -7/18 = - 38/54) -38/5 * 8/19 = - 16/5 = -3 1/5 = -3,2