В) -12•3/4-2•5/12; г) -12•(3/4-2)•5/12;

Question

В) -12•3/4-2•5/12; г) -12•(3/4-2)•5/12;

Answer 1

В) -12•3/4-2•5/12= -12/1*3/4-2/1*5/12=-9-5/6=-9 5/6;/// г) -12•(3/4-2)•5/12= -12/1*(-5/4)*5/12= 15/1*5/12=25/4=6 1/4

Answer 2

 -12•3/4-2•5/12 = -3*3-6*5 = -9-5/6 = -9 5/6
 -12•(3/4-2)•5/12 = -12*(-1 1/4)*5/12 = -12*(-5/4)*5/12 = 15*5/12 = 25/4 =
6 1/4

Comments

-5/6

---

да, спасибо. исправила)

---

Ок