Question

[thi quy tran]

-2/8 +3/5 + 9/7 + -18/5 làm giúp mik đi mn

Answer 1

[Sahara]

\(\dfrac{-2}{8}+\dfrac{3}{5}+\dfrac{9}{7}+\dfrac{-18}{5}\)
\(=\dfrac{-1}{4}+\left(\dfrac{3}{5}+\dfrac{-18}{5}\right)+\dfrac{9}{7}\)
\(=\dfrac{-1}{4}+-3+\dfrac{9}{7}\)
\(=-\dfrac{7}{28}-\dfrac{84}{28}+\dfrac{36}{28}\)
\(=-\dfrac{55}{28}\)

Answer 2

[nguyễn quốc huy đz hahahihi]

=-55/28 nhs