Jika 102y = 25, maka 10-y sama dengan:

Jika 102y = 25, maka 10-y sama dengan:

→ 102y = 25

→ y = 25/102

$tt = 10 - y$

$tt = 10 - frac{25}{102}$

$tt = 9 frac{102}{102} - frac{25}{102}$

$tt = 9 frac{77}{102}$

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Penjelasan dengan langkah-langkah:

102y = 25

y. = 25/102

y = 0,245

10 -y =

10 – 0,245 = 9,755