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InestaEXX
@InestaEXX
July 2022
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решите уравнение 1\4(x-7)=1\7(2+x)
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Vicus44ea
Пропорция:
a/b=c/d →ad=bc
значит:
1/4(х-7)=1/7(2+х)
7(2+х)=4(х-7)
14+7х=4х-28
7х-4х=-28-14
3х=-42
х= -42/3
х= -14
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Answers & Comments
a/b=c/d →ad=bc
значит:
1/4(х-7)=1/7(2+х)
7(2+х)=4(х-7)
14+7х=4х-28
7х-4х=-28-14
3х=-42
х= -42/3
х= -14