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Binda
@Binda
April 2021
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помогите решить 2 задание подробно!
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jekadva
2/7(1,4a-3 1/2b)-1,2(5/6а-0,5b)=2/5a-b-a+3/5b=-3/5a-2/5b
1)2/7*1,4a=2/7*14/10a=2/5a
2)2/7*3 1/2b=2/7*7/2b=b
3)1,2*5/6a=12/10*5/6a=2/2a=a
4)1,2*0,5b=12/10*5/10=6/10b=3/5
5)2/5a-a=-3/5a
6)-b+3/5b=-2/5b
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Answers & Comments
1)2/7*1,4a=2/7*14/10a=2/5a
2)2/7*3 1/2b=2/7*7/2b=b
3)1,2*5/6a=12/10*5/6a=2/2a=a
4)1,2*0,5b=12/10*5/10=6/10b=3/5
5)2/5a-a=-3/5a
6)-b+3/5b=-2/5b