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\frac{14}{42}=\frac{x}{x+12}
Ikki tarafini 42 ga bo‘ling.
\frac{1}{3}=\frac{x}{x+12}
\frac{14}{42} ulushini 14 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.
x+12=3x
x qiymati -12 teng bo‘lmaydi, chunki nolga bo‘lish mumkin emas. Tenglamaning ikkala tarafini 3\left(x+12\right) ga, 3,x+12 ning eng kichik karralisiga ko‘paytiring.
x+12-3x=0
Ikkala tarafdan 3x ni ayirish.
-2x+12=0
-2x ni olish uchun x va -3x ni birlashtirish.
-2x=-12
Ikkala tarafdan 12 ni ayirish. Har qanday sonni noldan ayirsangiz, o‘zining manfiyi chiqadi.
x=\frac{-12}{-2}
Ikki tarafini -2 ga bo‘ling.
x=6
6 ni olish uchun -12 ni -2 ga bo‘ling.