Question

Tìm x

1-x+4-x=3x

Answer 1

Answer 2

\(1-x+4-x=3x\)

\(\Leftrightarrow\left(1+4\right)+\left(-x-x\right)=3x\)

\(\Leftrightarrow5-2x=3x\)

\(\Leftrightarrow5=5x\)

\(\Leftrightarrow x=1\)

Vậy \(x=1\)

Answer 3

\(1-x+4-x=3x\)

⇒ \(\left(1+4\right)+\left(-x-x\right)=3x\)

⇒ \(5-2x=3x\)

⇒ \(5=3x+2x\)

⇒ \(5=5x\)

⇒ \(x=5:5\)

⇒ \(x=1\)

Vậy \(x=1.\)

Chúc bạn học tốt!

Answer 4

\(1-x+4-x=3x\\ \Leftrightarrow\left(1+4\right)+\left(-x-x\right)=3x\\ 5-2x=3x\\ 5=3x+2x\\ 5=5x\\ \Rightarrow x=1\)