x uchun yechish
x = \frac{9}{2} = 4\frac{1}{2} = 4,5
Grafik
Baham ko'rish
Klipbordga nusxa olish
7\left(2x-5\right)-8\left(3x+4\right)=-112
Tenglamaning ikkala tarafini 56 ga, 8,7 ning eng kichik karralisiga ko‘paytiring.
14x-35-8\left(3x+4\right)=-112
7 ga 2x-5 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
14x-35-24x-32=-112
-8 ga 3x+4 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
-10x-35-32=-112
-10x ni olish uchun 14x va -24x ni birlashtirish.
-10x-67=-112
-67 olish uchun -35 dan 32 ni ayirish.
-10x=-112+67
67 ni ikki tarafga qo’shing.
-10x=-45
-45 olish uchun -112 va 67'ni qo'shing.
x=\frac{-45}{-10}
Ikki tarafini -10 ga bo‘ling.
x=\frac{9}{2}
\frac{-45}{-10} ulushini -5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.
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}