giúp mik với xin các bạn đó
x/2+x+x/3+x+x+x/4=\(5\frac{3}{4}\)
suy ra x(1/2+1+1/3+1+1+1/4)=23/4
suy ra x.49/12=23/4
suy ra x=49/69
Trả lời:
\(\frac{x}{2}+x+\frac{x}{3}+x+x+\frac{x}{4}=5\frac{3}{4}\)
\(\Rightarrow x.\left(\frac{1}{2}+1+\frac{1}{3}+1+1+\frac{1}{4}\right)=\frac{23}{4}\)
\(\Rightarrow x.\frac{49}{12}=\frac{23}{4}\)
\(\Rightarrow x=\frac{23}{4}\div\frac{49}{12}\)
\(\Rightarrow x=\frac{69}{49}\)
