Question

X : 10+X x 20 x 9,9= 126 : 0,25

Answer 1

=>0,1x+198x=126x4

=>198,1x=504

hay x=720/283

Answer 2

\(x:10+x\times20\times9,9=126:0,25\)

\(\Rightarrow x:10+x\times198=504\)

\(\Rightarrow x+x\times1980=5040\)

\(\Rightarrow x\left(1+1980\right)=5040\)

\(\Rightarrow1981x=5040\Rightarrow x=\dfrac{720}{283}\)