Question

Tính giá trị biểu thức sau:

\(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}\)+\(\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)

Answer 1

\(\frac{1\left(0,125-\frac{1}{5} +\frac{1}{7}\right)}{3\left(0,125-\frac{1}{5}+\frac{1}{7}\right)}+\frac{1\left(\frac{1}{2}+\frac{1}{3}-0,2\right)}{\frac{3}{2}\left(\frac{1}{2}+\frac{1}{3}-0,2\right)}\)\(=\frac{1}{3}+\frac{1}{\frac{3}{2}}=\frac{1}{3}+\frac{2}{3}=\frac{3}{3}=1\)

Vậy giá trị biểu thức trên bằng 1

Answer 2

\(\frac{0,125-\frac{1}{5}+\frac{1}{7}}{0,375-\frac{3}{5}+\frac{3}{7}}+\frac{\frac{1}{2}+\frac{1}{3}-0,2}{\frac{3}{4}+0,5-\frac{3}{10}}\)

\(=\frac{\frac{19}{280}}{\frac{57}{280}}+\frac{\frac{19}{30}}{\frac{19}{20}}\)

\(=\frac{1}{3}+\frac{2}{3}\)

\(=1.\)

Chúc bạn học tốt!