tính M = (1618/1751+131313/686868):(1648/1751-131313/686868)
Tính nhanh
a) A= (3/5 + 3/7 + 3/11 - 3/37) : 4/5 + 4/7 + 4/11 - 4/37
b) B= (1648/1751 - 131313/686868) : (1648/1751 + 131313/686868)
\(B=(1-\frac{1}{21}).(1-\frac{1}{36})...(1-\frac{1}{1326})\)
\(C=(1+\frac{1}{1.3}).(1+\frac{1}{2.4}).(1+\frac{1}{3.5})...(1+\frac{1}{99.100})\)
\(D=(\frac{810}{167}-\frac{675}{225}):(\frac{810}{167}+\frac{675}{225})\)
\(E=(\frac{1648}{1751}+\frac{131313}{686868}):(\frac{1648}{1751}-\frac{131313}{686868})\)
\(F=(\frac{1248}{1391}+\frac{212121}{656565}):(\frac{27}{13}.3)\)
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Tính giá trị
B=(1648/1751+131313/686868):(164816/175117+1313/6868)
Tính giá trị biểu thức:
\(a,A=\left(-1\right).\left(-1\right)^2.\left(-1^3\right).\left(-1\right)^4...........\left(-1\right)^{2016}.\left(-1\right)^{2017}\)
\(b,B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(c,C=\frac{2a}{3b}+\frac{3b}{4c}+\frac{4c}{5d}+\frac{5d}{2a}\)
biết\(\frac{2a}{3b}=\frac{3b}{4c}=\frac{4c}{5d}=\frac{5d}{2a}\)
1,Tìm x:
\(\frac{3}{2}.x-70\frac{10}{11}:\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\right)=-5\)
Thực hiện phép tính để tính giá trị các biểu thức sau:
\(a,A=\left(\frac{136}{15}-\frac{28}{5}+\frac{62}{10}\right).\frac{21}{24}\)
\(b,B=70.\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
\(c,C=\frac{5}{2.1}+\frac{4}{1.11}+\frac{3}{11.2}+\frac{1}{2.15}+\frac{13}{15.4}\)
\(d,\left(\frac{1}{6}+2\frac{1}{12}-10,75\right).x-7=\left(\frac{2}{5}+\frac{3}{8}+0,225\right):0,1\)\(c,1-\left(5\frac{3}{8}+x-7\frac{5}{24}\right):16\frac{2}{3}=0\)
\(e,\frac{3}{2}x-70\frac{10}{11}:\left(\frac{131313}{151515}+\frac{131313}{353535}+\frac{131313}{636363}+\frac{131313}{999999}\right)=-5\)\(f,0,25x\left(\frac{8}{5}:1\frac{1}{2}+\frac{1}{50}\right)=\frac{7}{50}\left(2,91+0,09\right).4\)
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Bài 1 , Tính giá trị của biểu thức
a, \(A=\left(-1\right)\cdot\left(-1\right)^2\cdot\left(-1\right)^3\cdot\left(-1\right)^4\cdot\cdot\cdot\left(-1\right)^{2010}\cdot\left(-1\right)^{2011}\)
b, \(B=70\cdot\left(\frac{131313}{565656}+\frac{131313}{727272}+\frac{131313}{909090}\right)\)
c, \(C=\frac{2a}{3b}+\frac{3b}{4c}+\frac{4c}{5d}+\frac{5d}{2a}\)
biết \(\frac{2a}{3b}=\frac{3b}{4c}=\frac{4c}{5d}=\frac{5d}{2a}\)