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21,6 \(\times\) 3,4 + 2,16 \(\times\)38 + 7,2 \(\times\)5,4 + 21,6
= 2,16 \(\times\)34 + 2,16 \(\times\) 38 + 18 \(\times\) 0,4 \(\times\) 5,4 + 2,16 \(\times\) 10
= 2,16 \(\times\) 34 + 2,16 \(\times\) 38 + 18 \(\times\) 2,16 + 2,16 \(\times\) 10
= 2,16 \(\times\) ( 34 + 38 + 18 + 10)
= 2,16 \(\times\)100
= 216
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1,2 x 3,6 x X = 21,6
4,32 x X = 21,6
X = 21,6 :4,32
X = 5
Vậy x = 5 .
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\(x+\frac{x}{3}=24\)
\(x\times1+x\times\frac{1}{3}=24\)
\(x\times\left(1+\frac{1}{3}\right)=24\)
\(x\times\frac{4}{3}=24\)
\(x=24:\frac{4}{3}\)
\(x=18\)
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\(24+\frac{x}{50}+x=\frac{3}{5}\)
\(24+\frac{x}{50}+\frac{50x}{50}=\frac{3}{5}\)
\(24+\frac{51x}{50}=\frac{3}{5}\)
\(\frac{51x}{50}=-\frac{175}{5}\)
\(\Rightarrow255x=-8750\)
\(\Rightarrow x=-\frac{1750}{51}\)
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x + x/3 = 24
x/1 + x/3 = 24
3x/3 + x/3 = 24
4x/3 = 24
4x = 24 . 3
4x = 72
x = 72 : 4
x = 18
\(x+\frac{x}{3}=24\)
\(\frac{x}{1}+\frac{x}{3}=24\)
\(\frac{3x}{3}+\frac{x}{3}=24\)
\(\frac{4x}{3}=24\)
\(4x=24\times3\)
\(4x=72\)
\(x=72:4\)
\(x=18\)
![](https://rs.olm.vn/images/avt/0.png?1311)
X : 0,25 + X x 11 = 24
X x 25 : 100 + X x 11 = 24
X x 1/4 + X x 11 = 24
X x 4 + X x 11 = 24
X x ( 4 + 11 ) = 24
X x 15 = 24
X = 24 : 15
X = 1,6
![](https://rs.olm.vn/images/avt/0.png?1311)
\(+\frac{x}{3}=24\)
\(=>x+x.\frac{1}{3}\)\(=24\)
\(=>x.1+x.\frac{1}{3}=24\)
\(=>x.\left(1+\frac{1}{3}\right)=24\)
\(=>x.\frac{4}{3}\)\(=24\)
\(=>x=24:\frac{4}{3}\)
\(=>x=24.\frac{4}{3}\)
\(=>x=18\)
24 : x = 21 , 6
x = 24 : 21 , 6
x = 1 , 111
Thấy đúng thì tk cho mk nha !!! Chúc bn hc tốt !!! ♥
24:x=21,6
x=24:21,6
x=1,111