Question

Thực hiện phép tính một cách hợp lý:

 \(\frac{3}{5}+\frac{3}{11}-\left(\frac{-3}{7}\right)\) \(-\frac{1}{35}-\frac{3}{4}+\left(\frac{-23}{44}\right)\)

 

Answer 1

\(=\left[\frac{3}{5}-\frac{1}{35}-\left(\frac{-3}{7}\right)\right]+\left[\frac{3}{11}-\frac{3}{4}+\left(\frac{-23}{44}\right)\right]\)

\(=\left[\frac{21}{35}-\frac{1}{35}+\frac{15}{35}\right]+\left[\frac{12}{44}-\frac{33}{44}+\left(\frac{-23}{44}\right)\right]\)

\(=\left[\frac{20}{35}+\frac{15}{35}\right]+\left[\frac{-21}{44}+\left(\frac{-23}{44}\right)\right]\)

\(=1+\left(-1\right)\)

\(=0\)

Answer 2

thank you very much!