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=1/8-1/10+1/10-1/12+....+1/184-1/186
=1/8-1/186
Hok tốt
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![](https://rs.olm.vn/images/avt/0.png?1311)
\(x\cdot2+x\div0,01-x\div0,1=184\)
\(x\cdot2+x\cdot100-x\cdot10=184\)
\(x\left(2+100-10\right)=184\)
\(x\cdot92=184\)
x = 2
![](https://rs.olm.vn/images/avt/0.png?1311)
\(A=2\dfrac{3}{13}\times\dfrac{13}{58}\times8\times2\dfrac{15}{24}\times\dfrac{8}{21}\)
\(A=\dfrac{29}{13}\times\dfrac{13}{58}\times8\times\dfrac{21}{8}\times\dfrac{8}{21}\)
\(A=\dfrac{29\times13\times8\times21\times8}{13\times58\times8\times21}\)
\(A=\dfrac{1\times1\times1\times1\times8}{1\times2\times1\times1}\)
\(A=\dfrac{8}{2}\)
\(A=4\)
\(A=\dfrac{29}{13}\cdot\dfrac{13}{58}\cdot8\cdot\dfrac{21}{8}\cdot\dfrac{8}{21}=\dfrac{1}{2}\cdot8=4\)
Trả lời
\(\left(x-13\right).8=184\)
\(\left(x-13\right)=184:8=23\)
\(x=23+13\)
\(x=36\)
~ Hok tốt ~
(x - 13) \(\times\)8 = 184
=> (x - 13) = 184 : 8
=> x - 13 = 23
=> x = 23 + 13
=> x = 36