7/12+(-0,35)=? -0,375+3\8= -4/21+3\14= 1,3+(-1целая 7\15)= 4целых5\9+(-4целых 4\15)= -2целых 4\75+3,07=

7/12+(-0.35)=7/12-0.35=7/12-35/100=175/300-105/300=70/300=7/30
-0.375+3/8=-0.375+0.375=0
-4/21+3/14=-56/294+63/294=7/294
1.3+(-1 7/15)=1 3/10-1 7/15=13/10-22/15=39/30-44/30=-5/30=-1/6
4 5/9+(-4 4/15)=41/9-64/15=205/45-192/45=13/45
-2 4/75+3.07=-154/75+3 7/100=-154/75+307/100=-616/300+921/300=305/300=1 5/300=1 1/60