Question

\(\frac{x+1}{5}\)=\(\frac{2-x}{3}\)

Answer 1

Có: \(\frac{x+1}{5}=\frac{2-x}{3}\)

\(\rightarrow3\left(x+1\right)=5\left(2-x\right)\)

\(\rightarrow3x+3=10-5x\)

\(\rightarrow3x+5x=10-3\)

\(\rightarrow8x=7\)

\(\Rightarrow x=\frac{7}{8}\)

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Answer 2

\(\frac{x+1}{5}=\frac{2-x}{3}\\ \Leftrightarrow3x+3=10-5x\\ 3x+5x=10-3\\ 8x=7\\ x=\frac{7}{8}\)

Answer 3

$\frac{x+1}{5}$=$\frac{2-x}{3}$ MTC : 15

\(\Leftrightarrow\) \(3(x+1)\) = \(5(2-x)\)

\(\Leftrightarrow\) \(3x+3 = 10 - 5x\)

\(\Leftrightarrow\) \(3x+5x = 10 - 3\)

\(\Leftrightarrow\) \(8x= 7 \)

\(\Leftrightarrow\)\(x = \dfrac{7}{8} \)