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olipirolga
@olipirolga
August 2021
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Упростите выражения:
а)2а-(3b-а)+(3b-2a)
б) 6(а-2)-3(2а-5)
в) 5х+(7у-х)-(3+7у)
г) 8(х-3)+4(5-2х)
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Magnitogorskru
Verified answer
А)2а-(3b-а)+(3b-2a)= 2а-3b+a+3b-2a=a;//// б) 6(а-2)-3(2а-5)= 6a-12-6a+15=3;//// в) 5х+(7у-х)-(3+7у)= 5x+7y-x-3-7y= 4x-3;//// г) 8(х-3)+4(5-2х)= 8x-24+20-8x=-4
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Answers & Comments
Verified answer
А)2а-(3b-а)+(3b-2a)= 2а-3b+a+3b-2a=a;//// б) 6(а-2)-3(2а-5)= 6a-12-6a+15=3;//// в) 5х+(7у-х)-(3+7у)= 5x+7y-x-3-7y= 4x-3;//// г) 8(х-3)+4(5-2х)= 8x-24+20-8x=-4