tính
\(\frac{-1}{3}+\frac{0,2-0,3+\frac{5}{11}}{-0,3+\frac{9}{16}-\frac{15}{12}}\)
tìm x :
\(\frac{29-x}{21}+\frac{27-x}{23}+\frac{25-x}{25}+\frac{23-x}{27}+\frac{21-x}{29}=0\)
giúp mình nhé thanks
Tìm x, biết: \(\frac{x+11}{39}\)+ \(\frac{x+13}{37}\)+\(\frac{x+15}{35}\)= \(\frac{x+17}{33}\)+\(\frac{x+19}{31}\)+\(\frac{x+31}{29}\)
Tìm x biết
a) \(\frac{x-1}{21}=\frac{3}{x+1}\)
b)\(\frac{7}{x}+\frac{4}{5.9}+\frac{4}{9.13}+...+\frac{4}{41.45}=\frac{29}{45}\)
tìm x
\(\frac{29-x}{21}\)+\(\frac{27-x}{23}\)+\(\frac{25-x}{25}\)+\(\frac{23-x}{27}\)-\(\frac{166-x}{29}\)=0
các bn lm giúp mk nha!!!!!
mk đang cần gấp!!!!!!!!
/tmf x biết
/x-2/+2=x
\(x^2+5x+4=0\)
\(8\sqrt{x}=x^2\)
\(\frac{x+29}{31}-\frac{x+27}{33}=\frac{x+17}{43}-\frac{x+15}{45}\)
/x-1/+3x=1
Tìm x biết
(x-2)2=\(=\frac{38}{25}+\frac{9}{10}-\frac{11}{15}+\frac{13}{21}-\frac{15}{28}+\frac{17}{36}-...+\frac{197}{4851}-\frac{199}{4950}\)
\(\dfrac{x-17}{33}\)+\(\dfrac{x-21}{29}_{ }\)+\(\dfrac{x}{25}\)=4
Tìm x
/x-2/+2=x
\(x^2+5x+4=0\)
\(8\sqrt{x}=x^2\)
\(\frac{x+29}{31}-\frac{X+27}{33}=\frac{X+17}{43}-\frac{X+15}{45}\)
/X-1/\(+3X=1\)
tìm x,biết:
a)\(\frac{2}{\left(x+2\right)\left(x+4\right)}+\frac{4}{\left(x+4\right)\left(x+8\right)}+\frac{6}{\left(x+8\right)\left(x+14\right)}=\frac{x}{\left(x+2\right)\left(x+14\right)}\)
b)\(\frac{x+1}{10}+\frac{x+1}{11}+\frac{x+1}{12}=\frac{x+1}{13}+\frac{x+1}{14}\)
c)\(\left(x+2\right)^2=\frac{38}{25}+\frac{9}{10}-\frac{11}{15}+\frac{13}{21}-\frac{15}{28}+\frac{17}{36}-...+\frac{197}{4851}-\frac{199}{4950}\)
giúp tớ với,huhu
