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

\(=-8.\left(\frac{3}{4}-\frac{1}{4}\right):\left(\frac{27}{12}-\frac{14}{12}\right)\)

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

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

\(=-\frac{8.13}{2.12}\)

\(=-\frac{2.4.13}{2.4.3}\)

\(=-\frac{13}{3}\)

^_^

a=113/13-(24/7+53/13)=113/13-24/7-53/13=60/13-24/7=396/16

b=(64/9+37/11)-44/9=64/9+37/11-44/9=20/9+37/11=181/33

c=-5/7(2/11+9/11)+15/7=-5/7+15/7=10/7

d=0.7.22/3.20.0.375.5/28=0

e=(6,17+35/9-236/97)(1/3-0.25-1/12)=A.(1/3-1/4-1/12)=A.(1/12-1/12)=A.0=0

e=(6,17 + 3 5/9 - 2 36/97 ) . ( 1/3 - 0,25 - 1/12)=(6,17 + 3 5/9 - 2 36/97 ) .(1/3-1/12-0,25)

=(6,17 + 3 5/9 - 2 36/97 ) .(4/12-1/12-0,25)=(6,17 + 3 5/9 - 2 36/97 ) .(3/12-0,25)

=(6,17 + 3 5/9 - 2 36/97 ) .(1/4-0.25)=(6,17 + 3 5/9 - 2 36/97 ) .(0.25-0.25)

=(6,17 + 3 5/9 - 2 36/97 ) .0=0

Vậy E=0

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

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

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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