p uchun yechish
p=-\frac{2}{7}\approx -0,285714286
Baham ko'rish
Klipbordga nusxa olish
2p+7=5-5p
Tenglamaning ikkala tarafini 5 ga ko'paytirish.
2p+7+5p=5
5p ni ikki tarafga qo’shing.
7p+7=5
7p ni olish uchun 2p va 5p ni birlashtirish.
7p=5-7
Ikkala tarafdan 7 ni ayirish.
7p=-2
-2 olish uchun 5 dan 7 ni ayirish.
p=\frac{-2}{7}
Ikki tarafini 7 ga bo‘ling.
p=-\frac{2}{7}
\frac{-2}{7} kasri manfiy belgini olib tashlash bilan -\frac{2}{7} sifatida qayta yozilishi mumkin.
Misollar
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