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darel92
@darel92
October 2021
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a)3:3 3/4+2 2/5 *2 1/2-3 5/6
б)(30:27-1/3)*2 1/7+2/5
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учитель04
А)1) 3:3 3/4=3:15/4=3*4/15=4/5
2)2 2/5*2 1/2=12/5*5/2=6
3)4/5+6=6 4/5
4)6 4/5-3 5/6=120/5-90/6=720/30-450/30=270/30=9
б) 1) 30:27=30/27
2)30/27-1/3=10/9-1/3=
10/9-3/9=7/9
3) 7/9* 2 1/7=7/9*15/7=15/9=5/3
4)5/3+2/5=25/15+6/15=31/15= 2 1/15
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Answers & Comments
2)2 2/5*2 1/2=12/5*5/2=6
3)4/5+6=6 4/5
4)6 4/5-3 5/6=120/5-90/6=720/30-450/30=270/30=9
б) 1) 30:27=30/27
2)30/27-1/3=10/9-1/3=
10/9-3/9=7/9
3) 7/9* 2 1/7=7/9*15/7=15/9=5/3
4)5/3+2/5=25/15+6/15=31/15= 2 1/15