\(A=\dfrac{1-\dfrac{1}{6}}{2+\dfrac{1}{6}}\)
\(A=\dfrac{\dfrac{6}{6}-\dfrac{1}{6}}{\dfrac{12}{6}+\dfrac{1}{6}}\)
\(A=\dfrac{5}{\dfrac{6}{\dfrac{13}{6}}}\)
\(A=\dfrac{5}{13}\)
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\(B=\dfrac{6-\dfrac{1}{\dfrac{1}{2}-\dfrac{1}{3}}}{6+\dfrac{1}{\dfrac{1}{2}-\dfrac{1}{3}}}\)
\(B=\dfrac{6-\dfrac{1}{\dfrac{1}{6}}}{6+\dfrac{1}{\dfrac{1}{6}}}\)
\(B=\dfrac{6-6}{6+6}\)
`B=0`
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