Question

найдите значение выражения б)( - 2/3 + (- 2/15)) + (1,85+(-1 49)

Answer 1

( -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