Question

tìm x

X x 9,9 + X : 10 = 20,06

Answer 1

\(x\times9,9+x:10=20,06\\ \Rightarrow x\times9,9+x\times0,1=20,06\\ \Rightarrow x\times\left(9,9+0,1\right)=20,06\\ \Rightarrow x\times10=20,06\\ \Rightarrow x=20,06:10\\ \Rightarrow x=2,006\)