Question

tính

3/7+(-5/2)+(-3/5)

Answer 1

3/7+(-5/2)+(-3/5) = (-29/14) + (-3/5)

= (-187/70)

Answer 2

\(\frac{3}{7}+\left(-\frac{5}{2}\right)+\left(-\frac{3}{5}\right)\)

\(=\frac{3}{7}-\frac{5}{2}-\frac{3}{5}\)

\(=\frac{30-175-42}{70}\)

\(=\frac{-187}{70}\)