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-2x+20=\frac{7}{2}
Tomonlarni almashtirib, barcha oʻzgaruvchi shartlar chap tomonga oʻtkazing.
-2x=\frac{7}{2}-20
Ikkala tarafdan 20 ni ayirish.
-2x=\frac{7}{2}-\frac{40}{2}
20 ni \frac{40}{2} kasrga o‘giring.
-2x=\frac{7-40}{2}
\frac{7}{2} va \frac{40}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.
-2x=-\frac{33}{2}
-33 olish uchun 7 dan 40 ni ayirish.
x=\frac{-\frac{33}{2}}{-2}
Ikki tarafini -2 ga bo‘ling.
x=\frac{-33}{2\left(-2\right)}
\frac{-\frac{33}{2}}{-2} ni yagona kasrga aylantiring.
x=\frac{-33}{-4}
-4 hosil qilish uchun 2 va -2 ni ko'paytirish.
x=\frac{33}{4}
Ikkala surat va maxrajdan manfiy belgini olib tashlash bilan \frac{-33}{-4} kasrini \frac{33}{4} ga soddalashtirish mumkin.