x uchun yechish
x=2
Grafik
Baham ko'rish
Klipbordga nusxa olish
20-2\left(2x-1\right)=7x
Tenglamaning ikkala tarafini 10 ga, 5,10 ning eng kichik karralisiga ko‘paytiring.
20-4x+2=7x
-2 ga 2x-1 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
22-4x=7x
22 olish uchun 20 va 2'ni qo'shing.
22-4x-7x=0
Ikkala tarafdan 7x ni ayirish.
22-11x=0
-11x ni olish uchun -4x va -7x ni birlashtirish.
-11x=-22
Ikkala tarafdan 22 ni ayirish. Har qanday sonni noldan ayirsangiz, o‘zining manfiyi chiqadi.
x=\frac{-22}{-11}
Ikki tarafini -11 ga bo‘ling.
x=2
2 ni olish uchun -22 ni -11 ga bo‘ling.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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Chiziqli tenglama
y = 3x + 4
Arifmetik
699 * 533
Matritsa
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simli tenglama
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differensatsiya
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Oʻngga
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Chegaralar
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}