Question

7 2/5 +3 3/4 - 5,7 =
8 ½ - 6,32 + 2 3/8 =
6 1/3 – (4,12+2,18)=
5,68- 1 3/14 +2,12- 5 9/14
5,8- 5 8/9 + 3/4- 3 3/27

Answer 1

7 2/5 +3 3/4 - 5,7 =37/5+15/4-5,7=7,4+375-5,7=11,15-5,7=5,45
8 ½ - 6,32 + 2 3/8 =17/2--6,32+2 3/8=8,5-6,32+2 3/8=2,18+19/8=2,18+2,375=4,555
6 1/3 – (4,12+2,18)=19/3-6,3=1/30
5,68- 1 3/14 +2,12- 5 9/14=5,68-17/14+2,12-5 9/14=1563/350+2,12-5 9/14=461/70-79/14=33/35
5,8- 5 8/9 + 3/4- 3 3/27=5,8-53/9+3/4-3 3/27= -4/45+0,75-3 3/27=119/180-28/9= -2,45 

Answer 2

7 2/5+3 3/4-5,7= 7,4+3,75-5,7=11,15-5,7=5,45
8 1/2-6,32+2 3/8=8,5-6,32+2,375=2,18+2,375=4,555
6 1/3-(4,12+2,18)=6 1/3- 6,3=6 10/30- 6 9/30=1/30
5,68-1 3/14+2,12-5 9/14= 7,8-6 12/14= 7 4/5-6 6/7= 7 28/35 - 6 30/35= 33/35
5,8-5 8/9+3/4-3 3/27=5,8-5 8/9+0,75-3 1/9=6,55-9= -2,45