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school201
@school201
July 2022
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помогите решить по математике
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tetyana131
1) (а-8х)/а : (ах-8х²)/а²=
(а-8х)/а : х*(а-8х)/а²=
(а-8х)/а * а²/(х*(а-8х))=
а/х=
2) х +х/7=-8
х +х/7+8=0
7х/7 +х/7 +8*7/7=0
7х/7 +х/7 +56/7=0
(7х+х+56)/7=0
(8х+56)/7=0
8х+56=0
8х=-56
х=-56/8
х=-7
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Answers & Comments
(а-8х)/а : х*(а-8х)/а²=
(а-8х)/а * а²/(х*(а-8х))=
а/х=
2) х +х/7=-8
х +х/7+8=0
7х/7 +х/7 +8*7/7=0
7х/7 +х/7 +56/7=0
(7х+х+56)/7=0
(8х+56)/7=0
8х+56=0
8х=-56
х=-56/8
х=-7