[68-11]/3+1=
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\(\left(\frac{-1}{2}\right)^3:\frac{11}{8}-25\%.\left(\frac{-68}{11}\right)\)
\(=\frac{-1}{8}.\frac{8}{11}-\frac{1}{4}.\left(\frac{-68}{11}\right)\)
\(=\frac{-1}{11}-\frac{-17}{11}\)
\(=\frac{16}{11}\)
a: \(M=-\dfrac{152}{44}+\dfrac{-68}{44}=\dfrac{-220}{44}=-5\)
b: \(N=\dfrac{-9\cdot53}{25\cdot3}+\dfrac{27}{125}\cdot\dfrac{22}{3}=\dfrac{-1791}{375}\)
-3/11.(-22)/66.121/15
=(-3).(-22).121
11.66.15
=11
15
3/7.2/5.7/3.20.19/72
=3.2.7.20.19
7.5.3.72
=76
16
6/7.8/13+6/13.9/7-3/13.6/7
=6/7.8/13+6/7.9/13-3/13.6/7
=6/7.(8/13+9/13-3/13)
=6/7.14/13
=12/13
-1/4.152/11+68/4.(-1)/11
=152/4.(-1)/11+68/4.(-1)/11
=(-1)/11.(152/4+68/4)
=(-1)/11.220/4
=-110/22
-5/7.2/11+(-5)/7.9/11+12/7
=-5/7.2/11+-5/7.9/11+12/7
=-5/7.(2/11+9/11)+12/7
=-5/7.1+12/7
=(-5)/7+12/7
=7/7
=1
146/13-(18/7+68/13)
=146/13-18/7-68/13
=(146/13-68/13)-18/7
=78/13-18/7
=6-18/7
=42/7-18/7
=24/7
\(a-68=\left(3\frac{10}{11}-4\right):\left(\frac{2121}{2222}-1\right):\left(\frac{33333}{343434}-1\right)\)
\(a-68=\left(\frac{43}{11}-4\right):\left(\frac{-1}{22}\right):\left(\frac{-310101}{343434}\right)\)
\(a-68=\frac{-1}{11}.\frac{-22}{1}.\frac{-343434}{310101}\)
\(a-68=\frac{1}{11}.\frac{22}{1}.\frac{343434}{310101}.\left(-1\right)\)
\(a-68=\frac{-686868}{310101}\)
\(a=\frac{-686868}{310101}+68\)
\(a=\frac{-20400000}{310101}\)
Vậy \(a=\frac{-20400000}{310101}\)
[68-11]:3+1
=57:3+1
=19+1
=20
chúc học tốt nhé .
(68 - 11) : 3 + 1
= 57 : 3 + 1
= 19 + 1
= 20
k mik nha