1 , x = 36/11

2 , x = 26/21

1,\(\dfrac{-1}{4}-\dfrac{3}{4}:x=-\dfrac{11}{36}\)

\(-\dfrac{3}{4}:x=\left(-\dfrac{1}{4}\right)-\left(-\dfrac{11}{36}\right)\)

\(-\dfrac{3}{4}:x=\dfrac{1}{18}\)

\(x=\left(-\dfrac{3}{4}\right):\left(\dfrac{1}{18}\right)\)

\(x=\dfrac{27}{2}\)

2, \(\dfrac{3}{4}x-\dfrac{1}{2}=\dfrac{3}{7}\)

\(\dfrac{3}{4}x=\dfrac{3}{7}+\dfrac{1}{2}\)

\(\dfrac{3}{4}x=\dfrac{13}{14}\)

\(x=\dfrac{13}{14}:\dfrac{3}{4}\)

\(x=\dfrac{26}{21}\)

Bài 1:

a: \(x=\dfrac{2}{3}:\dfrac{3}{5}=\dfrac{2}{3}\cdot\dfrac{5}{3}=\dfrac{10}{9}\)

b: \(x=\dfrac{17}{8}:\dfrac{7}{17}=\dfrac{17}{8}\cdot\dfrac{17}{7}=\dfrac{289}{56}\)

c: \(x=-\dfrac{3}{4}:\dfrac{7}{12}=\dfrac{-3}{4}\cdot\dfrac{12}{7}=\dfrac{-63}{28}=-\dfrac{9}{4}\)

d: \(\Leftrightarrow x\cdot\dfrac{1}{6}=\dfrac{3}{8}-\dfrac{1}{4}=\dfrac{1}{4}\)

hay \(x=\dfrac{1}{4}:\dfrac{1}{6}=\dfrac{3}{2}\)

e: \(\Leftrightarrow\dfrac{1}{2}:x=-4-\dfrac{1}{3}=-\dfrac{17}{3}\)

hay \(x=-\dfrac{1}{2}:\dfrac{17}{3}=\dfrac{-3}{34}\)

dad

\(\frac{-1}{4}-\frac{3}{4}:x=\frac{-11}{36}\)

\(\frac{3}{4}:x=\frac{-1}{4}-\frac{-11}{36}\)

\(\frac{3}{4}:x=\frac{1}{18}\)

\(x=\frac{3}{4}:\frac{1}{18}\)

\(x=13,5\)

~ Chúc học tốt ~

Ai ngang qua xin để lại 1 L - I - K - E

-1/4 - 3/4 : x = -11/36

   <=>   3/4 : x = -1/4 - -11/36

  <=>  3/4 : x = -1/4 + 11/36

  <=> 3/4 : x  = 1/18

  <=>         x  = 3/4 : 1/18

  <=>        x   = 27/2  

\(\Rightarrow\frac{3}{4}:x=-\frac{1}{4}-\left(-\frac{11}{36}\right)=\frac{1}{18}\Rightarrow x=\frac{3}{4}:\frac{1}{18}=\frac{27}{2}\)

\(\frac{3}{4}:x=\frac{-1}{4}+\frac{11}{36}\)

\(\frac{3}{4}:x=\frac{-9}{36}+\frac{11}{36}\)

\(\frac{3}{4}:x=\frac{1}{18}\)

\(x=\frac{3}{4}:\frac{1}{18}=\frac{3}{4}.\frac{18}{1}=\frac{27}{2}\)

1: Ta có: \(4x^2-36=0\)

\(\Leftrightarrow\left(x-3\right)\left(x+3\right)=0\)

\(\Leftrightarrow\left[{}\begin{matrix}x=3\\x=-3\end{matrix}\right.\)

2: Ta có: \(\left(x-1\right)^2+x\left(4-x\right)=11\)

\(\Leftrightarrow x^2-2x+1+4x-x^2=11\)

\(\Leftrightarrow2x=10\)

hay x=5

3/8

13

Đặt tử ra ngoài rồi nhóm các phân số có mẫu lần lượt là 7,5,11,37 và tử là 1 vào xong rút gọn đi là ok = 3/4

chị ơi giải cụ thể cho e ik ạ

= ...... ????

2x - 36 = 4⁶ : 4³

2x - 36 = 64

2x = 64 + 36 

2x = 100

x = 100 : 2 

x = 50 

5^x+ 11= 36

5^x = 36 - 11 

5^x = 25 

=> x = 2

k mik nha làm ơn 

a)\(2x-36=4^6:4^3\Rightarrow2x-36=4^3\Rightarrow2x-36=64\Rightarrow2x=64+36\Rightarrow2x=100\Rightarrow x=50\)

b)\(5^x+11=36\Rightarrow5^x=36-11\Rightarrow5^x=25\Rightarrow x=2\)

     2x - 36 = 4⁶ : 4³

=> 2x - 36 = 64

=> 2x       = 64+36

=> 2x       = 100

=> x         = 100 : 2

=> x         = 50

     5^x + 11 = 36

=> 5^x         = 36 - 11 

=> 5^x           = 25

=> 5^x         = 5²

=> x          = 2

k mình nha !!!

a, \(-\dfrac{1}{4}-\dfrac{3}{4}:x=-\dfrac{11}{36}\)

\(\Rightarrow\dfrac{3}{4}:x=-\dfrac{1}{4}-\left(-\dfrac{11}{36}\right)\)

\(\Rightarrow\dfrac{3}{4}:x=\dfrac{1}{18}\)

\(\Rightarrow x=\dfrac{3}{4}:\dfrac{1}{18}\)

\(\Leftrightarrow x=\dfrac{3}{4}.18=\dfrac{54}{4}\)

b, \(\left(-1\dfrac{1}{5}+x\right):\left(-3\dfrac{3}{5}\right)=-\dfrac{7}{4}+\dfrac{1}{4}:\dfrac{1}{8}\)

\(\left(-\dfrac{6}{5}+x\right):\left(-\dfrac{18}{5}\right)=-\dfrac{7}{4}+2\)

\(\left(-\dfrac{6}{5}+x\right):\left(-\dfrac{18}{5}\right)=\dfrac{1}{4}\)

\(\left(-\dfrac{6}{5}+x\right)=\dfrac{1}{4}.\dfrac{18}{5}\)

\(-\dfrac{6}{5}+x=\dfrac{9}{10}\)

\(\Rightarrow\)\(x=\dfrac{9}{10}-\left(-\dfrac{6}{5}\right)\)

\(\Leftrightarrow x=\dfrac{21}{10}\)

hơi khó anh mai ơi !

hơi bị khó... chờ mình ghi lại để hỏi cô!!!

dấu này"/" là chia hay phần