x uchun yechish
x=7
Grafik
Baham ko'rish
Klipbordga nusxa olish
5\left(3x+7\right)-40=4\left(4x-8\right)+20
Tenglamaning ikkala tarafini 20 ga, 4,5 ning eng kichik karralisiga ko‘paytiring.
15x+35-40=4\left(4x-8\right)+20
5 ga 3x+7 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
15x-5=4\left(4x-8\right)+20
-5 olish uchun 35 dan 40 ni ayirish.
15x-5=16x-32+20
4 ga 4x-8 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
15x-5=16x-12
-12 olish uchun -32 va 20'ni qo'shing.
15x-5-16x=-12
Ikkala tarafdan 16x ni ayirish.
-x-5=-12
-x ni olish uchun 15x va -16x ni birlashtirish.
-x=-12+5
5 ni ikki tarafga qo’shing.
-x=-7
-7 olish uchun -12 va 5'ni qo'shing.
x=7
Ikkala tarafini -1 ga ko‘paytiring.
Misollar
Ikkilik tenglama
{ x } ^ { 2 } - 4 x - 5 = 0
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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}