Question

Помогите решить
2 13 * на 34 - 4 + 1 23*34

Answer 1

21/3*(3/4-4+12/3*3/4)
1) 12/3*3/4 = 12/4 = 3
2) 3/4 - 4 = -3 1/4
3) -3 1/4 + 3 = -1/4
4) 21/3 * (-1/4) = 7 * (-1/4) = -7/4 = -1 3/4
Ответ : -1 3/4