Ответы и объяснения

2014-03-03T12:54:42+04:00
-1 5/8+3/4=-13/8+6/8=-7/8
2/5-0,7=0,4-0,7=-0,3
-8/15-(-0,4)=-8/15+2/5=-8/15+6/15=-2/15
-3,2-2 1/3=-3 1/5-2 1/3=-16/5-7/3=(-48-35)/15=-83/15=-5 8/15
7,8-8 1/4=7,8-8,25=-0,45
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P(-2/3)  и K(1/6)=1/6+2/3=5/6
C(-2 5/7)иD(1 2/7)=1 2/7+2 5/7=4
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4,7-(-2)-(-1,5)=4,7+2+1,5=8,2
1 2/9-1 1/3+1 5/18=11/9-4/3+23/18=22/18-24/18+23/18=21/18=1 3/18=1 1/6
-7 2/15+4 1/6-1,2=-107/15+25/6-12/10=-321/30+125/30-36/30=-232/30=
=-7 11/15