x uchun yechish
x=3
Grafik
Baham ko'rish
Klipbordga nusxa olish
9\left(-x+5\right)+2\left(x-3\right)=18
Tenglamaning ikkala tarafini 3 ga ko'paytirish.
9\left(-x\right)+45+2\left(x-3\right)=18
9 ga -x+5 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
9\left(-x\right)+45+2x-6=18
2 ga x-3 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
9\left(-x\right)+39+2x=18
39 olish uchun 45 dan 6 ni ayirish.
9\left(-x\right)+2x=18-39
Ikkala tarafdan 39 ni ayirish.
9\left(-x\right)+2x=-21
-21 olish uchun 18 dan 39 ni ayirish.
-9x+2x=-21
-9 hosil qilish uchun 9 va -1 ni ko'paytirish.
-7x=-21
-7x ni olish uchun -9x va 2x ni birlashtirish.
x=\frac{-21}{-7}
Ikki tarafini -7 ga bo‘ling.
x=3
3 ni olish uchun -21 ni -7 ga bo‘ling.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometriya
4 \sin \theta \cos \theta = 2 \sin \theta
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}