/x+\(\dfrac{3}{7}\)/-3.175=/-1,825/
\(=> \)/x+\(\dfrac{3}{7}\)\(/ \)-3.175=1,825
\(=>\)/x+\(\dfrac{3}{7}\)/-525=1,825
\(=> \)/x+\(\dfrac{3}{7}\)/=1,825+525
\(=> \)/x+\(\dfrac{3}{7}\)/=526,825
Còn đến phần sau bạn tự làm đi nhé
|x+\(\dfrac{3}{7}\) | - 3,175= |-1,825|
tìm x
a) \(\dfrac{3}{7}x-\dfrac{2}{3}x=\dfrac{10}{21}\)
b) \(\dfrac{7}{35}:\left(x-\dfrac{1}{3}\right)=-\dfrac{2}{25}\)
Tìm x biết :
a) \(\dfrac{x}{7}+\left(-\dfrac{3}{7}\right)^2=\dfrac{2}{7}:\dfrac{3}{4}\)
b) \(\left(x-3^2\right)^3=\left(3^3\right)^2\)
Tìm x :
a) \(\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
b) \(\dfrac{2}{3x}-\dfrac{3}{12}=\dfrac{4}{5}-\left(\dfrac{7}{x}-2\right)\)
c) \(\dfrac{x+2014}{2}+\dfrac{2x+4028}{7}=\dfrac{x+2009}{5}+\dfrac{x+2020}{6}\)
d)\(\dfrac{3}{\left(x+2\right)\left(x+5\right)}+\dfrac{5}{\left(x+5\right)\left(x+10\right)}+\dfrac{7}{\left(x+10\right)\left(x+18\right)}=\dfrac{x}{\left(x+2\right)\left(x+17\right)}\)
Help me , bn nào giải đc bài nò thì giải nha !!! =))
\(\dfrac{2}{3}x+\dfrac{2}{15}x+\dfrac{2}{35}x+\dfrac{2}{63}x+\dfrac{99}{x}=-\dfrac{3}{7}\)
\(\dfrac{3}{7}+\dfrac{1}{7}:x=\dfrac{3}{14}\)
2. tìm x
a. \(\dfrac{2}{3}x+1=\dfrac{7}{15}\)
b. \(3^{x+2}-3^x=24\)
c. \(\dfrac{x}{12}=\dfrac{5}{9}\)
d. \(\dfrac{-2}{3}:x+\dfrac{5}{8}=\dfrac{-7}{12}\)
Tìm số chưa biết
a)\(\dfrac{x}{y}=\dfrac{9}{7};\dfrac{y}{z}=\dfrac{7}{3};x=y-z=-15\)
b)\(\dfrac{x}{-3}=\dfrac{y}{-8};x^2-y^2=-\dfrac{44}{5}\)
1 tìm x
a,\(\dfrac{1}{4}x-\left|-\dfrac{3}{10}\right|\)
\(\left(\dfrac{2}{5}-\dfrac{7}{10}x\right):1\dfrac{2}{3}=\dfrac{-3}{4}\)
\(\dfrac{7}{16}:\left(\dfrac{x}{4}+\dfrac{9}{2}\right)-1\dfrac{5}{6}=0\)
