Question

\(\frac{x}{3}-\frac{1}{8}=\frac{5}{8}\)

\(3\frac{1}{3}.x-6\frac{3}{4}=3\frac{1}{4}\)

giúp mik nha mai mik kiểm tra rồi

Answer 1

      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 !

Answer 2

Ta có : \(\frac{x}{3}-\frac{1}{8}=\frac{5}{8}\)

\(\Leftrightarrow\frac{x}{3}=\frac{5}{8}-\frac{1}{8}\)

\(\Leftrightarrow\frac{x}{3}=\frac{1}{2}\)

\(\Leftrightarrow x=\frac{1}{2}.\frac{1}{3}=\frac{1}{6}\)

Answer 3

\(\frac{x}{3}-\frac{1}{8}+\frac{5}{8}\)

\(\frac{x}{3}=\frac{5}{8}+\frac{1}{8}=\frac{6}{8}=\frac{3}{4}\)

\(x=\frac{3}{4}.3=\frac{9}{4}\)

\(3\frac{1}{3}x-6\frac{3}{4}=3\frac{1}{4}\)

\(\frac{10}{3}x=3\frac{1}{4}+6\frac{3}{4}=10\)

\(x=10:\frac{10}{3}=3\)

Answer 4

\(\frac{x}{3}-\frac{1}{8}=\frac{5}{8}\)

\(\frac{x}{3}=\frac{5}{8}+\frac{1}{8}\)

\(\frac{x}{3}=\frac{6}{8}\)

\(\Rightarrow8x=6.3\)

\(\Rightarrow8x=18\)

\(\Rightarrow x=\frac{9}{4}\)

\(3\frac{1}{3}.x-6\frac{3}{4}=3\frac{1}{4}\)

\(3\frac{1}{3}.x=3\frac{1}{4}+6\frac{3}{4}\)

\(\frac{10}{3}.x=\frac{13}{4}+\frac{27}{4}\)

\(\frac{10}{3}.x=10\)

\(x=10:\frac{10}{3}\)

\(x=10\times\frac{3}{10}\)

\(x=3\)

Answer 5

2,25

3

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