Question

x * 3,9 + x : 10 = 26

Answer 1

\(x\times3,9+x:10=26\)

\(x\times3,9+x\times0,1=26\)

\(x\times\left(3,9+0,1\right)=26\)

\(x\times4=26\)

làm tiếp đi nhé! :))

Answer 2

\(x\cdot3,9+x\div10=26\)

\(\Rightarrow x\cdot3,9+x\cdot0,1=26\)

\(\Rightarrow x\cdot(3,9+0,1)=26\)

\(\Rightarrow x\cdot4=26\)

\(\Rightarrow x=26\div4\)

\(\Rightarrow x=6,5\)

Chúc bạn học tốt ~

Answer 3

x * 3.9 + x : 10 = 26

x * 3.9 + x * 0.1 = 26

x * ( 3.9 + 0.1 ) = 26

x * 4  = 26

x = 26 : 4

x = 6.5

Answer 4

\(x\times3,9+x\div10=2,6\)

\(\Leftrightarrow x\times3,9+\frac{x}{10}=26\)

\(\Leftrightarrow x\times3,9+\frac{x\times0,1}{10\times0,1}=26\)

\(\Leftrightarrow x\times3,9+\frac{x\times0,1}{1}=26\)

\(\Leftrightarrow x\times3,9+x\times0,1=26\)

\(\Leftrightarrow x\left(3,9+0,1\right)=26\)

\(\Leftrightarrow4x=26\)

\(\Leftrightarrow x=\frac{26}{4}\)

\(\Leftrightarrow x=6,5\)

Vậy \(x=6,5\)

Answer 5

x=13/2 nha

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