Question

Пжжжж решите!! очень надо!!!!!!!

Answer 1

53,4*20/89 - 36,9*17 7/9 = -644
1) 53,4*20/89=534/10*20/89=6*2=12
2) 36,9*17 7/9=369/10*160/9=41*16=656
3) 12-656=-644

Answer 2

53,4*20/89-36,9*17 7/9=53 4/10 * 20/89 - 36 9/10 * 160/9 = 267/5*20/89-
-369/10*160/9=12-656=-644