\(x+x:0,25=250,5\)
\(x+x.4=250,5\)
\(x\left(1+4\right)=250,5\)
\(5x=250,5\)
\(\Rightarrow x=50,1\)
PP/ss: Hoq chắc ((:
x + x : 0,25 = 250,5
x + x . 4 = 250,5
x . ( 1 + 4 ) = 250,5
x . 5 = 250 ,5
x = 250,5 : 5
x = 50,1
Vậy x = 50,1
\(x+x\div0,25=250,5\Leftrightarrow x+x\div\frac{1}{4}=250,5\)
\(\Leftrightarrow x+x\times4=250,5\)
\(\Leftrightarrow x\times\left(1+4\right)=250,5\)
\(\Leftrightarrow x\times5=250,5\)
\(\Leftrightarrow x=250,5\div5\)
\(\Leftrightarrow x=50,1\)
Vậy \(x=50,1\)