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Veb-qidiruvdagi o'xshash muammolar

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\frac{3\left(1+3x\right)}{21}-\frac{7\left(2-4x\right)}{21}
Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 7 va 3 ning eng kichik umumiy karralisi 21. \frac{1+3x}{7} ni \frac{3}{3} marotabaga ko'paytirish. \frac{2-4x}{3} ni \frac{7}{7} marotabaga ko'paytirish.
\frac{3\left(1+3x\right)-7\left(2-4x\right)}{21}
\frac{3\left(1+3x\right)}{21} va \frac{7\left(2-4x\right)}{21} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.
\frac{3+9x-14+28x}{21}
3\left(1+3x\right)-7\left(2-4x\right) ichidagi ko‘paytirishlarni bajaring.
\frac{-11+37x}{21}
3+9x-14+28x kabi iboralarga o‘xshab birlashtiring.
\frac{3\left(1+3x\right)}{21}-\frac{7\left(2-4x\right)}{21}
Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. 7 va 3 ning eng kichik umumiy karralisi 21. \frac{1+3x}{7} ni \frac{3}{3} marotabaga ko'paytirish. \frac{2-4x}{3} ni \frac{7}{7} marotabaga ko'paytirish.
\frac{3\left(1+3x\right)-7\left(2-4x\right)}{21}
\frac{3\left(1+3x\right)}{21} va \frac{7\left(2-4x\right)}{21} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.
\frac{3+9x-14+28x}{21}
3\left(1+3x\right)-7\left(2-4x\right) ichidagi ko‘paytirishlarni bajaring.
\frac{-11+37x}{21}
3+9x-14+28x kabi iboralarga o‘xshab birlashtiring.