\(D=\left(-2\right)^3x\left(\frac{3}{4}-0,25\right):\left(\frac{9}{4}-\frac{7}{6}\right)\)

\(D=-8.\frac{1}{2}:\frac{13}{12}\)

\(D=-4:\frac{13}{12}\)

\(D=\frac{-48}{13}\)

a/  S = ( - 2/3 + 1) - (7/5 - 0,2) + )7/15 - 1 + 4/3)  = - 2/3 + 1 - 7/5 + 1/5 +7/15 - 1 + 4/3 = 2/3 - 6/5 + 7/15 = 10/15 - 18/15 + 7/15 = - 1/15.

b/ S = 0,25 - 9- (- 3/4) - [ - 7/3 + (-9/2)] - 5/6 = 1/4 - 9 + 3/4 + 7/3 + 9/2 - 5/6 = - 8 + 14/6 + 27/6 - 5/6 = - 8 + 6 = - 2

......................?

mik ko biết

mong bn thông cảm !$$%

cho xin đáp án chi tiết điiiii

(-2)³ . (\(\frac{3}{4}\) - 0,25) : (\(\frac{9}{4}-\frac{7}{6}\))

= -8 . \(\frac{1}{2}\) : \(\frac{13}{12}\) 

= -4 : \(\frac{13}{12}\)

= \(-\frac{48}{13}\)

 = -8 . 1/5 : 13/12 = -8/5 : 13/12 = -96/65

\(=(\frac{3}{4}-\frac{1}{4})-\frac{7}{3}+\frac{9}{2}-\frac{5}{6}=\frac{1}{2}+\frac{9}{2}-\frac{14}{6}-\frac{5}{6}=5-\frac{19}{6}=\frac{11}{6}\)

Kết bạn nha bạn

Bài làm

       \(\frac{3}{4}-0,25-\left(\frac{7}{3}+\frac{-9}{2}\right)-\frac{5}{6}\)

\(=\frac{3}{4}-\frac{1}{4}-\left(\frac{14}{6}+\frac{-27}{6}\right)-\frac{5}{6}\)

\(=\frac{1}{2}+\frac{13}{6}-\frac{5}{6}\)

\(=\frac{3}{6}+\frac{13}{6}-\frac{5}{6}\)

\(=\frac{11}{6}\)

# Học tốt #

3/4-0,25-(7/3+(-9/2) )-5/6

=3/4-1/4-(14/6+(-27/6) )-5/6

=1/2-(-13/6)-5/6

=3/6+13/6-5/6

=(3+13-5)/6

=11/6

......................?

mik ko biết

mong bn thông cảm !$$%