x uchun yechish
x=12
Grafik
Baham ko'rish
Klipbordga nusxa olish
30x+\left(108-88\right)\left(40-x\right)=920
30 olish uchun 138 dan 108 ni ayirish.
30x+20\left(40-x\right)=920
20 olish uchun 108 dan 88 ni ayirish.
30x+800-20x=920
20 ga 40-x ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
10x+800=920
10x ni olish uchun 30x va -20x ni birlashtirish.
10x=920-800
Ikkala tarafdan 800 ni ayirish.
10x=120
120 olish uchun 920 dan 800 ni ayirish.
x=\frac{120}{10}
Ikki tarafini 10 ga bo‘ling.
x=12
12 ni olish uchun 120 ni 10 ga bo‘ling.
Misollar
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