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Silaevazlata
@Silaevazlata
August 2021
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Решите пожалуйста оба примера.
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пимочка
№1.
1) 7/9 : 2 = 7/9 * 1/2 = 7/18
2) 7/18 - 0,7 = 7/18 - 7/10 = 35/90 - 63/90 = - 28/90 = -14/45
3) 5,6*0,25=1,4
4) -14/45 : 1,4 = -14/45 : 14/10 = -14/45 * 10/14 = -2/9
№2.
1) 11/30 : 0,5 = 11/30 : 1/2 = 11/30 *2 = 11/15
2) 11/15 - 1,1 = 11/15 - 1 1/10 = - (1 1/10 - 11/15) = - (1 3/30 - 2/30) = -1 1/30
3) 4,4*0,25=1,1
4) -1 1/30 : 1,1 = - 31/30 : 11/10 = -31/30 * 10/11 = -31/33
2 votes
Thanks 1
iriska124
А)7\9\2 - 0,7\5,6*0,25=-2\9
1)7\9\2=7\9*1\2=7\18
2)7\18-0,7=7\18-7\10=7*10-7*18\180=70-126\180=-56\180
3)5,6*0,25=1,4
4)-56\180\1,4=-56\180*10\14=-56\18*1\14=-4\18=-2\9
б)11\30\0,5-1,1\4,4*0,25=-1\3
1)11\30\0,5=11\30*10\5=11\15
2)11\15-1,1=11\15-11\10=11*10-11*15\150=110-165\150=-55\150=-11\30
3)4,4*0,25=1,1
4)-11\30\1,1=-11\30\11\10=-11\30*10\11=-1\3
1 votes
Thanks 1
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Answers & Comments
1) 7/9 : 2 = 7/9 * 1/2 = 7/18
2) 7/18 - 0,7 = 7/18 - 7/10 = 35/90 - 63/90 = - 28/90 = -14/45
3) 5,6*0,25=1,4
4) -14/45 : 1,4 = -14/45 : 14/10 = -14/45 * 10/14 = -2/9
№2.
1) 11/30 : 0,5 = 11/30 : 1/2 = 11/30 *2 = 11/15
2) 11/15 - 1,1 = 11/15 - 1 1/10 = - (1 1/10 - 11/15) = - (1 3/30 - 2/30) = -1 1/30
3) 4,4*0,25=1,1
4) -1 1/30 : 1,1 = - 31/30 : 11/10 = -31/30 * 10/11 = -31/33
1)7\9\2=7\9*1\2=7\18
2)7\18-0,7=7\18-7\10=7*10-7*18\180=70-126\180=-56\180
3)5,6*0,25=1,4
4)-56\180\1,4=-56\180*10\14=-56\18*1\14=-4\18=-2\9
б)11\30\0,5-1,1\4,4*0,25=-1\3
1)11\30\0,5=11\30*10\5=11\15
2)11\15-1,1=11\15-11\10=11*10-11*15\150=110-165\150=-55\150=-11\30
3)4,4*0,25=1,1
4)-11\30\1,1=-11\30\11\10=-11\30*10\11=-1\3