Question

-13/7+3/5+-1/7

 

Answer 1

\(-\dfrac{13}{7}+\dfrac{3}{5}+\left(-\dfrac{1}{7}\right)\)

\(=-\dfrac{13}{7}+\left(-\dfrac{1}{7}\right)+\dfrac{3}{5}\)

\(=-\dfrac{14}{7}+\dfrac{3}{5}\)

\(=-2+\dfrac{3}{5}\)

\(=-\dfrac{10}{5}+\dfrac{3}{5}\)

\(=-\dfrac{7}{5}\)

Answer 2

\(\dfrac{-13}{7}+\dfrac{3}{5}+\dfrac{-1}{7}\)

\(=\left(\dfrac{-13}{7}+\dfrac{-1}{7}\right)+\dfrac{3}{5}\)

\(=\dfrac{-13+\left(-1\right)}{7}+\dfrac{3}{5}\)

\(=-2+\dfrac{3}{5}\)

\(=\dfrac{-2}{1}+\dfrac{3}{5}\)

\(=\dfrac{-10}{5}+\dfrac{3}{5}\)

\(=\dfrac{-7}{5}\)