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Directioner1509
@Directioner1509
July 2022
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Помогите пожалуйста решить:
1) 2\7+5\14-1 1\7:2\3
2)(-2:0,8+0,4)*1\3
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iriska124
А)
2\7+5\14-1 1\7:2\3=15\28
1)-1 целая 1\7 \2\3=-8\7\(2\3)=-8\7*3\2=-24\14
2)2\7+5\14=2*14+5*7\28=28+35\28=63\28
3)63\28-24\14=63-24*2\28=15\28
б)
(-2:0,8+0,4)*1\3=-63
1)-2\0,8=-2\(8\10)=-2*10\8=-20\8=-2,5
2)-2,5+0,4=-2,1
3)-21\(1\3)=-21*3\1=-63
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Answers & Comments
1)-1 целая 1\7 \2\3=-8\7\(2\3)=-8\7*3\2=-24\14
2)2\7+5\14=2*14+5*7\28=28+35\28=63\28
3)63\28-24\14=63-24*2\28=15\28
б)(-2:0,8+0,4)*1\3=-63
1)-2\0,8=-2\(8\10)=-2*10\8=-20\8=-2,5
2)-2,5+0,4=-2,1
3)-21\(1\3)=-21*3\1=-63