( 1/2 + x ) x 3/4 = 2/3
1/2 + x = 2/3 : 3/4
1/2 + x = 8/9
x = 8/9 - 1/2
x = 7/18
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\(\left(\dfrac{1}{2}+x\right)\times\dfrac{3}{4}=\dfrac{2}{3}\)
\(\Leftrightarrow\dfrac{1}{2}+x=\dfrac{2}{3}:\dfrac{3}{4}\)
\(\Leftrightarrow\dfrac{1}{2}+x=\dfrac{8}{9}\)
\(\Leftrightarrow x=\dfrac{8}{9}-\dfrac{1}{2}\)
\(\Leftrightarrow x=\dfrac{7}{18}\)
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