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21\left(4x+3\right)-15\left(6x-2\right)=35\left(5x+4\right)+315
Tenglamaning ikkala tarafini 105 ga, 5,7,3 ning eng kichik karralisiga ko‘paytiring.
84x+63-15\left(6x-2\right)=35\left(5x+4\right)+315
21 ga 4x+3 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
84x+63-90x+30=35\left(5x+4\right)+315
-15 ga 6x-2 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-6x+63+30=35\left(5x+4\right)+315
-6x ni olish uchun 84x va -90x ni birlashtirish.
-6x+93=35\left(5x+4\right)+315
93 olish uchun 63 va 30'ni qo'shing.
-6x+93=175x+140+315
35 ga 5x+4 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-6x+93=175x+455
455 olish uchun 140 va 315'ni qo'shing.
-6x+93-175x=455
Ikkala tarafdan 175x ni ayirish.
-181x+93=455
-181x ni olish uchun -6x va -175x ni birlashtirish.
-181x=455-93
Ikkala tarafdan 93 ni ayirish.
-181x=362
362 olish uchun 455 dan 93 ni ayirish.
x=\frac{362}{-181}
Ikki tarafini -181 ga bo‘ling.
x=-2
-2 ni olish uchun 362 ni -181 ga bo‘ling.