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\(x\times\left(0,1+4+2,9+2+1\right)=25,2\)
\(10x=25,2\)
\(x=2,52\)
\(x\times0,1+x\times4+x\times2,9+x\times2+x=25,2\)
\(x\times\left(0,1+4+2,9+2+1\right)=25,2\)
\(x\times10=25,2\)
\(x=25,2:10\)
\(x=2,52\)
tìm x mè giải thích sao :v?
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2 x 3 x 4 x 8 + 0.5 x 0.25 x 0.25
= 6 x 4 x 8 + 0.5 x 0.25 x 0.25
= 24 x 8 + 0.125 x 0.25
= 192 + 0.0625
= 192.0625
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a) \(2,4:0,25+5,6:4+2\times\frac{1}{4}\)
\(=2,4\times\frac{1}{4}+5,6\times\frac{1}{4}+2\times\frac{1}{4}\)
\(=\left(2,4+5,6+2\right)\times\frac{1}{4}\)
\(=10\times\frac{1}{4}=\frac{5}{2}\)
b)\(3,47\times\frac{1}{2}-2,47:2+0,5\)
\(=3,47\times\frac{1}{2}-2,47\times\frac{1}{2}+\frac{1}{2}\times1\)
\(=\left(3,47-2,47+1\right)\times\frac{1}{2}\)
\(=2\times\frac{1}{2}=1\)
#Y/n
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\(a)20,12-(y\times1,25)=9,12\\y\times1,25=20,12-9,12\\y\times1,25=11\\y=11:1,25\\y=8,8\\---\\b)18,5+74:y=37\\74:y=37-18,5\\74:y=18,5\\y=74:18,5\\y=4\)
9,12 x 6 + 91,2 - 9,12 : 0,5 - 9,12 : 0,25
= 9,12 x 6 + 10 x 9,12 - 9,12 x 2 - 9,12 x 4
= 9,12 x ( 6 + 10 - 2 - 4 )
= 9,12 x 10 = 91,2