Найдите значение выражения: 1) -78 + 36 + 19 + (-22)

1) -78 + 36 + 19 + (-22) + (-25)=-78-22+36+19-25=-100+30=-70;
2) 0,74+(-9,39)+3,26+(-10,61)+5,25=0,74+3,26-9,39-10,61+5,25=4-20+5,25=-10,75;
3) 7/16 + (-11/42) + (-9/16) + 17/42= 7/16 - 9/16 + 17/42 - 11/42=-2/16+6/42=
-1/8+1/7=(-7+8)/56=1/56;
4) -9/40 + 13/50 + (-23/50) + 19/40=19/40-9/40+13/50-23/50=10/40-10/50=1/4-1/5=
(5-4)/20=1/20;
5) -3 31/36 + (-1 17/24) + 5 4/36 + (-2 4/24)=5 4/36 - 3 31/36 - 2 4/24 - 1 17/24 =
2 4/36-31/36 - 3 21/24=2 - 27/36-31/36-3 7/8=1 1/4 + (-3 7/8)=-2 + (1/4-7/8)=
-2 + (2-7)/8= -2 5/8.