Найдите значение выражения б)( - 2/3 + (- 2/15)) + (1,85+(-1 4\9)
( -2/3 + (-2/15)) + (1,85 + ( -1 4/9) = 29/180 1) (-2/3 + ( -2/15)) = -10/15 + ( -2/15) = -12/15 = -4/5 2) 1,85 +(-1 4/9) = 1 85/100 +(-1 4/5) = 1 765/900 +(-1 400/900)= 365/900= 73/180 3) -4/5 + 73/180 = -144/180 + 173/180 = 29/180