Question

3/5 -1/7 +2/5 -6/7-1/4

Giải từng bước cho mik nha

Answer 1

\(\frac{3}{5}-\frac{1}{7}+\frac{2}{5}-\frac{6}{7}-\frac{1}{4}\)

\(=\left(\frac{3}{5}+\frac{2}{5}\right)-\left(\frac{1}{7}+\frac{6}{7}\right)-\frac{1}{4}\)

\(=\frac{5}{5}-\frac{7}{7}-\frac{1}{4}\)

\(=1-1-\frac{1}{4}\)

\(=0-\frac{1}{4}\)

\(=-\frac{1}{4}\)

Answer 2

\(\frac{3}{5}-\frac{1}{7}+\frac{2}{5}-\frac{6}{7}-\frac{1}{4}\)

\(=\left(\frac{3}{5}+\frac{2}{5}\right)-\left(\frac{1}{7}+\frac{6}{7}\right)-\frac{1}{4}\)

\(=1-1-\frac{1}{4}\)

\(=-\frac{1}{4}\)