Question

[Vũ Thành công]

x*3,9+x/10=26

Answer 1

[Vũ Thị Kim Thu]

sau đê 

Nếu đúng là:

x ×3,9+x/10 = 24

ta có 

x×(3,9+1/10)=24

x×(39/10+1/10)=24

x×4=24

x=24:4

x=6

VẬY x =6

Answer 2

[Ngô Hoàng Phú Trọng]

   \(x\cdot3.9+x\div10=26\)

\(x\cdot\left(3.9+1\div10\right)=26\)

\(x\cdot\left(3.9\div10+1\div10\right)=26\)

\(x\cdot0.39+0.1=26\)

\(x\cdot0.49=26\)

\(x=26\div0.49\)

\(x=53.06122448979592\)