( 3 \cdot ( - 3 a - 1 ) - 10 a + 19 = 7 \cdot ( 2 - 3 a ) + 12
a uchun yechish
a=5
Baham ko'rish
Klipbordga nusxa olish
-9a-3-10a+19=7\left(2-3a\right)+12
3 ga -3a-1 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-19a-3+19=7\left(2-3a\right)+12
-19a ni olish uchun -9a va -10a ni birlashtirish.
-19a+16=7\left(2-3a\right)+12
16 olish uchun -3 va 19'ni qo'shing.
-19a+16=14-21a+12
7 ga 2-3a ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-19a+16=26-21a
26 olish uchun 14 va 12'ni qo'shing.
-19a+16+21a=26
21a ni ikki tarafga qo’shing.
2a+16=26
2a ni olish uchun -19a va 21a ni birlashtirish.
2a=26-16
Ikkala tarafdan 16 ni ayirish.
2a=10
10 olish uchun 26 dan 16 ni ayirish.
a=\frac{10}{2}
Ikki tarafini 2 ga bo‘ling.
a=5
5 ni olish uchun 10 ni 2 ga bo‘ling.
Misollar
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