Question

Đề bài là zậy nè ai bik giữ mk với mkk hông bik làm ai bik chỉ mk . Mk cảm ơn lun

H =

( -5/24+0,75+7/12) :( -2 1/8 )

thank you

Answer 1

\(H=\left(-\dfrac{5}{24}+0,75+\dfrac{7}{12}\right)\div\left(-\dfrac{21}{8}\right)\)

\(H=\left(-\dfrac{5}{24}+\dfrac{3}{4}+\dfrac{7}{12}\right).\left(-\dfrac{8}{21}\right)\)

\(H=\left(-\dfrac{5}{24}+\dfrac{18}{24}+\dfrac{14}{24}\right).\left(-\dfrac{8}{21}\right)\)

\(H=\dfrac{-5+18+14}{24}.\left(-\dfrac{8}{21}\right)\)

\(H=\dfrac{27}{24}\left(-\dfrac{8}{21}\right)\)

\(H=-\dfrac{3}{7}\)

Vậy \(H=-\dfrac{3}{7}\)