x uchun yechish
x=13
Grafik
Baham ko'rish
Klipbordga nusxa olish
\left(x-7\right)\times 7=\left(x+8\right)\times 2
x qiymati -8,7 qiymatlaridan birortasiga teng bo‘lmaydi, chunki nolga bo‘lish mumkin emas. Tenglamaning ikkala tarafini \left(x-7\right)\left(x+8\right) ga, x+8,x-7 ning eng kichik karralisiga ko‘paytiring.
7x-49=\left(x+8\right)\times 2
x-7 ga 7 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
7x-49=2x+16
x+8 ga 2 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
7x-49-2x=16
Ikkala tarafdan 2x ni ayirish.
5x-49=16
5x ni olish uchun 7x va -2x ni birlashtirish.
5x=16+49
49 ni ikki tarafga qo’shing.
5x=65
65 olish uchun 16 va 49'ni qo'shing.
x=\frac{65}{5}
Ikki tarafini 5 ga bo‘ling.
x=13
13 ni olish uchun 65 ni 5 ga bo‘ling.
Misollar
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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}