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vladlena9111
@vladlena9111
July 2022
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7^x+5*7^(x-2)=378 подробное решение
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msneon
7^x(1+5*7^-2)=378
7^x(1+5*1/49)=378
7^x(54/49)=378
7^x=378:54/49
7^x=343
7^x=7^3
x=3
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Answers & Comments
7^x(1+5*1/49)=378
7^x(54/49)=378
7^x=378:54/49
7^x=343
7^x=7^3
x=3