1 : 7 - 9:6:6:6 - 7 + 8x 4%
= \(\dfrac{1}{7}\) - \(\dfrac{1}{24}\) - 7 + \(\dfrac{8}{25}\)
= \(\dfrac{17}{168}\) - 7 + \(\dfrac{8}{25}\)
= \(-\dfrac{1159}{168}\) + \(\dfrac{8}{25}\)
= -\(\dfrac{27631}{4200}\)
\(1:7-9:6:6:6-7+8\times4\%\)
\(=\dfrac{1}{7}-\dfrac{1}{24}-7+\dfrac{8}{25}\)
\(=\dfrac{17}{168}-7+\dfrac{8}{25}\)
\(=-\dfrac{1159}{168}+\dfrac{8}{25}\)
\(=-\dfrac{27631}{4200}\)
Tick cho mik nhé