Thực hiện phép tính: - 3/5 + 1/5

n) \(\frac{5}{9}+\frac{-4}{5}+\frac{-5}{9}+\frac{2}{5}=\frac{5}{9}+\frac{-5}{9}+\frac{-4}{5}+\frac{2}{5}=\frac{-2}{5}\)

o) \(\frac{3}{-10}-\frac{-4}{9}+\frac{-11}{10}=\frac{3}{-10}+\frac{-11}{10}+\frac{4}{9}=\frac{-14}{10}+\frac{4}{9}=\frac{-43}{45}\)

p) \(\frac{13}{7}.\frac{-4}{5}+\frac{13}{7}.\frac{-3}{2}=\frac{13}{7}.\left(\frac{-4}{5}+\frac{-3}{2}\right)=\frac{13}{7}.\frac{-23}{10}=\frac{-299}{70}\)

q) \(\frac{4}{7}.\frac{-12}{25}+\frac{-12}{25}.\frac{-3}{14}=\frac{-12}{25}.\left(\frac{4}{7}+\frac{-3}{14}\right)=\frac{-12}{25}.\frac{5}{14}=\frac{-6}{35}\)

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

b) \(\frac{1}{8}+\frac{-2}{3}=\frac{3}{24}-\frac{16}{24}=\frac{-13}{24}\)

c) \(\frac{-4}{7}+\frac{-5}{2}=\frac{-8}{14}+\frac{-35}{14}=\frac{-43}{14}\)

d) \(\frac{-4}{3}-\frac{2}{3}=\frac{-6}{3}=-2\)

e) \(\frac{-5}{6}-\frac{-1}{3}=\frac{-5}{6}+\frac{2}{6}=-\frac{3}{6}=\frac{-1}{2}\)

f) \(\frac{7}{9}-\frac{-5}{8}=\frac{56}{72}+\frac{45}{72}=\frac{101}{72}\)

g) \(\frac{-8}{9}.\frac{3}{2}=\frac{-4}{3}\)

h) \(\frac{-15}{6}:\frac{-7}{3}=\frac{-15}{6}.\frac{3}{-7}=\frac{15}{14}\)

k) \(\frac{12}{15}:\frac{-3}{-4}=\frac{12}{15}.\frac{-4}{-3}=\frac{16}{15}\)

m) \(\frac{-6}{7}+\frac{2}{3}+\frac{4}{7}=\frac{-6}{7}+\frac{4}{7}+\frac{2}{3}=\frac{-2}{7}+\frac{2}{3}=\frac{8}{21}\)