Question

X:0,1+X:0,25+X:0,5+Xx4=2018

Answer 1

Ui bài khó quá mk ko làm đc xl 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Answer 2

 X:0,1+X:0,25+X:0,5+X×4

⇒ x :0,1+ x :0,25+ X:0,5+x:0,25=2018

⇒ X:(0,1+0,25+0,5+0,25)=2018

⇒ X:1,1=2018

⇒ x=2018 x1,1=2219,8

 Vậy X=2219,8

Answer 3

\(x:0,1+x:0,25+x:0,5+x\cdot4=2018\)

\(x\cdot10+x\cdot4+x\cdot2+x\cdot4=2018\)

\(x\left(10+4+2+4\right)=2018\)

\(x\cdot20=2018\)

\(\Leftrightarrow x=100,9\)

P/s: Ko kho dau a :>

Answer 4

\(x\div0,1+x\div0,25+x\div0,5+x\cdot4=2018\)

\(\Rightarrow x\cdot10+x\cdot4+x\cdot2+x\cdot4=2018\)

\(\Rightarrow x(10+4+2+4)=2018\)

\(\Rightarrow x\cdot20=2018\)

\(\Rightarrow x=2018\div20=100,9\)

Answer 5

X:0,1+X:0,25+X:0,5+Xx4=2018

=> Xx10+Xx4+Xx2+Xx4=2018

    Xx(10+4+2+4)=2018

    X x 20=2018

    X=2018:20

    X=100,9

Vậy X=100,9