\(x\times9,25\times x=55,35\)

\(x\times x=55,35:9,25\)

\(x\times x\approx5,98\)

\(x\approx2,45\)

hình như em chép sai đề bài

x=2,446177382

x*4+1/2*x=55,35

=x*(4+1/2)=55,35

=x*4,5=55,35

=55,35:4,5

=12,3

123/10 hoặc 12,3

`!`

`x xx 4 +1/2 xx x=55,35`

`=> x xx ( 4+1/2) =55,35`

`=  x xx 9/2=55,35`

`=>x= 55,35 : 9/2`

`=>x= 3,075`

\(\Leftrightarrow x\cdot\dfrac{9}{2}=55.35\)

hay x=12,3

12,3

nếu X*4+1:2*X=55,35

thì X=12,3

x*4 +  1/2 * x = 55,35

x * ( 4 + 1/2 ) = 55,35

x * 4,5 = 55,35

x = 55,35 : 4,5 

x = 12,3

Vậy x = 12,3

Lời giải

\(x\cdot4+\frac{1}{2}\cdot x=55,35\)

\(x\cdot\left(4+\frac{1}{2}\right)=55,35\)

\(x\cdot\frac{9}{2}=55,35\)

      \(x=55,35:\frac{9}{2}\)

      \(x=12,3\)

\(4x+\frac{1}{2}x=55,35.\)

\(\Leftrightarrow\left(4+\frac{1}{2}\right)x=55,35.\)

\(\Leftrightarrow4,5x=55,35\)

\(\Leftrightarrow x=12,3\)

\(x\) x\(\dfrac{1}{2}\)+\(\dfrac{1}{4}\)-\(\dfrac{1}{5}\)= 55

\(x\) x \(\dfrac{11}{20}\)       = 55

\(x\)                = 55 : \(\dfrac{11}{20}\)

\(x\)                =100