Question

x+1/2=2 mũ 5:2 mũ 3

Answer 1

\(\dfrac{x+1}{2}=2^5:2^3\)

\(\Leftrightarrow\dfrac{x+1}{2}=2^{5-3}\)

\(\Leftrightarrow\dfrac{x+1}{2}=2^2\)

\(\Leftrightarrow\dfrac{x+1}{2}=4\)

\(\Leftrightarrow\dfrac{x}{2}+\dfrac{1}{2}=4\)

\(\Leftrightarrow\dfrac{x}{2}=4-\dfrac{1}{2}\)

\(\Leftrightarrow\dfrac{x}{2}=\dfrac{8}{2}-\dfrac{1}{2}\)

\(\Leftrightarrow\dfrac{x}{2}=\dfrac{8-1}{2}\)

\(\Leftrightarrow\dfrac{x}{2}=\dfrac{7}{2}\)

\(\Leftrightarrow x=\dfrac{7}{2}.2\)

\(\Leftrightarrow x=7\)

Vậy \(x=7\)

Answer 2

x+\(\dfrac{1}{2}=2^5:2^3\)

=>x+\(\dfrac{1}{2}=2^2=4\)

=>x=\(\dfrac{7}{2}\)