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\(x:0,25+86\cdot x+x:0,1=82,4\)
\(x\cdot4+86\cdot x+x\cdot10=82,4\)
\(x\left(4+86+10\right)=82,4\)
\(x\cdot100=82,4\\ x=82,4:100\\ x=0,824\)
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x + x/3 .45 + x/2 .14=230
x+15x +7x =230
23x=230
x=10
(dấu . là nhân )
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mk k chắc
x + x * 1/3 : 2/9 + x : 2/7 = 252
x + x * 3/2 + x * 2/7 = 252
x * ( 1 + 3/2 + 2/7 ) =252
x * 39/14 =252
x = 252 : 39/14
x = 3528/39
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\(x\times\frac{1}{2}\)\(+x\times\frac{1}{4}\)\(+x\times\frac{1}{8}\)\(=\frac{21}{24}\)
\(x\times\frac{1}{2}\)\(+x\times\frac{1}{4}\)\(=\frac{21}{24}\)\(\div\frac{1}{8}\)
\(x\times\frac{1}{2}\)\(+x\times\frac{1}{4}\)\(=\frac{168}{24}\)
\(x\times\frac{1}{2}\)\(=\)\(\frac{168}{24}\div\frac{1}{4}\)
\(x\times\frac{1}{2}\)\(=\frac{1344}{24}\)
\(x=\frac{1344}{24}\div\frac{1}{2}\)
\(x=112\)
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3/7 + x : 1/3 = 19/21
-> x : 1/3 = 19/21 - 3/7
-> x : 1/3 = 10/21
-> x = 10/21 . 1/3
-> x = 10/63