a) \(\frac{x}{3}\)\(-\)\(\frac{1}{8}\)\(=\)\(\frac{5}{8}\)
\(\Rightarrow\) \(\frac{x}{3}\)=\(\frac{5}{8}+\frac{1}{8}\)
\(\Rightarrow\) \(\frac{x}{3}\)\(=\frac{3}{4}\)
\(\Rightarrow\) x=3.3:4
\(\Rightarrow\) x=2,25
Vậy x=2,25
b) \(3\frac{1}{3}\).x-\(6\frac{3}{4}=3\frac{1}{4}\)
\(\Rightarrow\)\(\frac{10}{3}\).x-\(\frac{27}{4}=\frac{13}{4}\)
\(\Rightarrow\) \(\frac{10}{3}\).x=\(\frac{13}{4}+\frac{27}{4}\)
\(\Rightarrow\) \(\frac{10}{3}\).x=10
\(\Rightarrow\) x=\(10\div\frac{10}{3}\)
\(\Rightarrow\) x=3
Vậy x=3
Ủng hộ mik nha mọi người !
Ta có : \(\frac{x}{3}-\frac{1}{8}=\frac{5}{8}\)
\(\Leftrightarrow\frac{x}{3}=\frac{5}{8}-\frac{1}{8}\)
\(\Leftrightarrow\frac{x}{3}=\frac{1}{2}\)
\(\Leftrightarrow x=\frac{1}{2}.\frac{1}{3}=\frac{1}{6}\)
\(\frac{x}{3}-\frac{1}{8}+\frac{5}{8}\)
\(\frac{x}{3}=\frac{5}{8}+\frac{1}{8}=\frac{6}{8}=\frac{3}{4}\)
\(x=\frac{3}{4}.3=\frac{9}{4}\)
\(3\frac{1}{3}x-6\frac{3}{4}=3\frac{1}{4}\)
\(\frac{10}{3}x=3\frac{1}{4}+6\frac{3}{4}=10\)
\(x=10:\frac{10}{3}=3\)
\(\frac{x}{3}-\frac{1}{8}=\frac{5}{8}\)
\(\frac{x}{3}=\frac{5}{8}+\frac{1}{8}\)
\(\frac{x}{3}=\frac{6}{8}\)
\(\Rightarrow8x=6.3\)
\(\Rightarrow8x=18\)
\(\Rightarrow x=\frac{9}{4}\)
\(3\frac{1}{3}.x-6\frac{3}{4}=3\frac{1}{4}\)
\(3\frac{1}{3}.x=3\frac{1}{4}+6\frac{3}{4}\)
\(\frac{10}{3}.x=\frac{13}{4}+\frac{27}{4}\)
\(\frac{10}{3}.x=10\)
\(x=10:\frac{10}{3}\)
\(x=10\times\frac{3}{10}\)
\(x=3\)
2,25
3
ai thấy mình đúng thì tk cho mình nhé