H uchun yechish
H=\frac{138-4c}{5}
c uchun yechish
c=-\frac{5H}{4}+\frac{69}{2}
Baham ko'rish
Klipbordga nusxa olish
25H=690-20c
Ikkala tarafdan 20c ni ayirish.
\frac{25H}{25}=\frac{690-20c}{25}
Ikki tarafini 25 ga bo‘ling.
H=\frac{690-20c}{25}
25 ga bo'lish 25 ga ko'paytirishni bekor qiladi.
H=\frac{138-4c}{5}
690-20c ni 25 ga bo'lish.
20c=690-25H
Ikkala tarafdan 25H ni ayirish.
\frac{20c}{20}=\frac{690-25H}{20}
Ikki tarafini 20 ga bo‘ling.
c=\frac{690-25H}{20}
20 ga bo'lish 20 ga ko'paytirishni bekor qiladi.
c=-\frac{5H}{4}+\frac{69}{2}
690-25H ni 20 ga bo'lish.
Misollar
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