Question

(18 : 2/9 ) - (-20*-1/5) найдите ответ

Answer 1

(18*9/2)-4
(9*9)-4
81-4=77

Answer 2

1) 18:2/9= 18*9/2=81
2) -20*(-1/5) =-(-20/5) =4
3) 81-4=77