(19\20+1\2+4\5+3\4)*(-123)-(-5092):76
(19\20+1\2+4\5+3\4)*(-123)-(-5092):76=
1)19/20+1/2+4/5+3/4= 19+1*10+4*4+3*5 = 19+10+16+15 =60/20=3
20 20
2)3*(-123)=-369
3)-5092:76=-67
4)-369+67=-302
(19/20+1/2+4/5+3/4)*(-123)-(-5092):76 = (19/20+10/20+16/20+15/20)*(-123)+67 =
= 60/20*(-123)+67 = 3*(-123)+67 = -369+67 = -302