Question

По действиям
(-2 1/8)*(-1 29/51)+(-1 23/42)*3 1/13-(-4 2/3)*6= ?
Помогите ,пожалуйста. С меня 40 б.

Answer 1

1) - 2 1/8 * - 1 29/51 = + 17/8 * 80/51 = 10/3 = 3 1/3 
2) - 1 23/42 * 3 1/13 = - 65/42 * 40/13 = - 100/21 = - 4 16/21
3) - 4 2/3 * 6 = - 14/3 * 6 = - 28
4) 3 1/3 - 4 16/21 + 28 = 3 7/21 - 4 16/21 + 28 = - 1 9/21 + 28 =
= - 1 3/7 + 27 7/7 = 26 4/7 ( Ответ )