Bài làm :
Ta có :
\(\frac{3}{4}\times\frac{1}{8}+\frac{3}{4}\times\frac{3}{8}-\frac{1}{2}\times\frac{3}{4}\)
\(=\frac{3}{4}\times\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\times0=0\)
Chúc bạn học tốt !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
=3/4* (1/8+3/8-1/2)
=3/4*(4/8-4/8)
=3/4 * 0
= 0
Ta có: \(\frac{3}{4}\times\frac{1}{8}+\frac{3}{4}\times\frac{3}{8}-\frac{1}{2}\times\frac{3}{4}\)
\(=\frac{3}{4}\times\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\times\left(\frac{1+3-4}{8}\right)\)
\(=\frac{3}{4}\times\frac{0}{8}\)
\(=\frac{3}{4}\times0\)
\(=0\)
\(=\frac{3}{4}\times\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\times\left(\frac{4}{8}-\frac{4}{8}\right)\)
\(=0\)
\(\frac{3}{4}×\frac{1}{8}+\frac{3}{4}×\frac{3}{8}-\frac{1}{2}×\frac{3}{4}=\frac{3}{4}×\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)=\frac{3}{4}×\left(\frac{1}{8}+\frac{3}{8}-\frac{4}{8}\right)=\frac{3}{4}×\left(\frac{4}{8}-\frac{4}{8}\right)=\frac{3}{4}×0=0\)
học tốt
\(\frac{3}{4}\cdot\frac{1}{8}+\frac{3}{4}\cdot\frac{3}{8}-\frac{1}{2}\cdot\frac{3}{4}\)
\(=\frac{3}{4}\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\left(\frac{1}{2}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\cdot0\)
\(=0\)
\(\frac{3}{4}\times\frac{1}{8}+\frac{3}{4}\times\frac{3}{8}-\frac{1}{2}\times\frac{3}{4}\)
\(=\frac{3}{4}\times\left(\frac{1}{8}+\frac{3}{8}-\frac{1}{2}\right)\)
\(=\frac{3}{4}\times0=0\)