r uchun yechish
r=-5
Baham ko'rish
Klipbordga nusxa olish
3\left(r-1\right)=2\left(2r+1\right)
Tenglamaning ikkala tarafini 6 ga, 2,3 ning eng kichik karralisiga ko‘paytiring.
3r-3=2\left(2r+1\right)
3 ga r-1 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
3r-3=4r+2
2 ga 2r+1 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
3r-3-4r=2
Ikkala tarafdan 4r ni ayirish.
-r-3=2
-r ni olish uchun 3r va -4r ni birlashtirish.
-r=2+3
3 ni ikki tarafga qo’shing.
-r=5
5 olish uchun 2 va 3'ni qo'shing.
r=-5
Ikkala tarafini -1 ga ko‘paytiring.
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}