b uchun yechish
b=8
Baham ko'rish
Klipbordga nusxa olish
\left(2b-7\right)\times 8=\left(b+10\right)\times 4
b qiymati -10,\frac{7}{2} qiymatlaridan birortasiga teng bo‘lmaydi, chunki nolga bo‘lish mumkin emas. Tenglamaning ikkala tarafini \left(2b-7\right)\left(b+10\right) ga, b+10,2b-7 ning eng kichik karralisiga ko‘paytiring.
16b-56=\left(b+10\right)\times 4
2b-7 ga 8 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
16b-56=4b+40
b+10 ga 4 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.
16b-56-4b=40
Ikkala tarafdan 4b ni ayirish.
12b-56=40
12b ni olish uchun 16b va -4b ni birlashtirish.
12b=40+56
56 ni ikki tarafga qo’shing.
12b=96
96 olish uchun 40 va 56'ni qo'shing.
b=\frac{96}{12}
Ikki tarafini 12 ga bo‘ling.
b=8
8 ni olish uchun 96 ni 12 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}