а) 4/27+3/27+9/27+7/27+1/27=(4+3+9+7+1)/27=24/27=8/9
б)8/35+6/35+4/35+2/35+1/35=(8+6+4+2+1)/35=21/35=3/5
=
а) 4/27+3/27+9/27+7/27+1/27=(4+3+9+7+1)/27=24/27=8/9
б)8/35+6/35+4/35+2/35+1/35=(8+6+4+2+1)/35=21/35=3/5
=