biết rồi thì hỏi làm gì

X : 0,5 = X : \(\frac{1}{2}\)= X x \(\frac{2}{1}\)= X x 2

Xx98=2017x0,5

X x 98= 1008,5

   x=1008,5:98

   x=10,29081633

\(x.98:0,5=2017\)

                \(x.98=2017.0,5\)

                \(x.98=1008,5\)

                \(x=1008,5:98\)

\(x=10,29\)

x*98:0.5=2017

x*98=2017*0.5

x*98=1008.5

x=1008.5:98=\(\frac{2017}{196}\)

k cho tròn 130 zới!!!

\(x\times98+x:0,5=2017\)

\(x\times98+x\times2=2017\)

    \(x\times\left(98+2\right)=2017\)

               \(x\times100=2017\)

                             \(x=2017:100\)

                              \(x=20,17\)

x*98+x/0,5=2017
x*98+x*2=2017
x*100=2017
x=20,17

x = 20,17 

Nếu thấy sai thì cứ thủư lại

X*98+X:0,5=2017

X*98+X:1/2=2017

X*98+X*2=2017

X*(98+2)=2017

X*100=2017

X       =2017:100

X       =20,17

X * 98 + X : 0,5 = 2017

X * 98 + X : 1/2 = 2017

X * 98 + X * 2 = 2017

X * ( 98 + 2 ) = 2017

X * 100 = 2017

         X = 2017 : 100

         X = 20,17

cảm ơn các bạn nha

\(x+x:0,5+x:0,25+x:0,125=75\)

\(x+x\cdot2+x\cdot4+x\cdot8=75\)

\(x\cdot\left(1+2+4+8\right)=75\)

\(x\cdot15=75\\ x=75:15\\ x=5\)

dễ **** mình giải cho

\(x\times98+x:0,5=2017\)

\(x\times98+x\times2=2017\)

   \(x\times\left(98+2\right)=2017\)

             \(x\times100=2017\)

                          \(x=2017:100\)

                          \(x=20,17\)

\(x\times98+x\div0,5=2017\)

\(x\times98+x\times2=2017\)

\(x\times\left(98+2\right)=2017\)

\(x\times100=2017\)

\(x=2017\div100\)

\(x=20,17\)

x x 98 + x : 0,5 = 2017

x x 98 + x x 2 = 2017

x x ( 98 + 2 ) = 2017

x x 100 = 2017

x = 2017 : 100

x = 2017