ớ ko có vế phải seo tính đc

à quên =10 chờ tí nhé

\(\frac{x-2}{3.4}+\frac{x-2}{4.5}+...+\frac{x-2}{8.9}=10\)

tới đây tự nghĩ là ra

TL: 

Đáp án: 

@@@@@@@@@@@@@@@@@@@@@@ 

HT

\(\frac{56-x}{34}=\frac{144}{96}\)

\(=\frac{56-x}{34}=\frac{3}{2}\)

\(=\frac{56-x}{34}=\frac{51}{34}\)

\(\Rightarrow56-x=51\)

\(=-x=51-56\)

\(\Rightarrow x=5\)

x bang 2

56-x.96=34.144

bạn xem lai đề phần a đi mik giúp cho

f(x)=9x³-1/3x+3x²-3x+1/3x²-1/9x³-3x²-9x+27+3x

    = 9x³-1/9x³+3x²+1/3x²-3x²-1/3-3x-9x+3x+27

   = 80/9x³+1/3x²-28/3x+27

\(\frac{\sqrt{49}}{6}< \left|x-\frac{2}{3}\right|< \frac{26}{\sqrt{81}}\)

\(\Rightarrow\frac{7}{6}< \left|x-\frac{2}{3}\right|< \frac{26}{9}\)

\(\Rightarrow\frac{21}{18}< \left|x-\frac{12}{18}\right|< \frac{52}{18}\)

còn lại cậu tự tính nha

\(\frac{\sqrt{49}}{6}< \left|x-\frac{2}{3}\right|< \frac{26}{\sqrt{81}}\)

\(\frac{7}{6}< x-\frac{2}{3}< \frac{26}{9}\)

\(\frac{11}{6}< x< \frac{32}{9}\)

75:(x-8)=5

x-8       = 75:5

x-8       =15

x           = 15+8

x           =23

75/(x-8)=5

=> x-8=75:5

=> x-8=15

=> x=15+8

=> x=23

nhanh lên

\(\frac{56-x}{34}=\frac{144}{96}=\frac{3}{2}\)

\(\Rightarrow\left(56-x\right)2=34\cdot3=102\)

\(\Rightarrow56-x=102\div2\)

\(\Rightarrow56-x=51\)

\(\Rightarrow x=56-51\)

\(\Rightarrow x=5\)

\(56-\frac{x}{34}=\frac{144}{96}\)

\(\Rightarrow\frac{x}{34}=56-\frac{144}{96}\)

\(\Rightarrow\frac{x}{34}=\frac{109}{2}\)

\(\Rightarrow2x=109\cdot34=3706\)

\(\Rightarrow x=3706\div2\)

\(\Rightarrow x=1853\)

\(56-\frac{x}{34}=\frac{144}{96}=\frac{3}{2}\)

\(\Rightarrow\frac{x}{34}=56-\frac{3}{2}\)

\(\Rightarrow\frac{x}{34}=\frac{109}{2}\)

\(\Rightarrow2x=109\cdot34=3706\)

\(\Rightarrow x=3706\div2=1853\)