Question

Answer 1

b: \(B=\dfrac{12}{17}\left(\dfrac{5}{7}+\dfrac{1}{7}+\dfrac{1}{7}\right)=\dfrac{12}{17}\)

Answer 2

\(A=\left(-2\dfrac{1}{5}+\dfrac{2}{7}+\dfrac{12}{13}\right)\)

\(A=\dfrac{-11}{15}+\dfrac{2}{7}+\dfrac{12}{13}\)

\(A=\dfrac{-1001}{1365}+\dfrac{390}{1365}+\dfrac{1260}{1365}\)

\(A=\dfrac{649}{1365}\)

\(B=\dfrac{12}{17}.\dfrac{5}{7}-\dfrac{-12}{17}.\dfrac{1}{7}+\dfrac{1}{17.7}.12\)

\(B=\dfrac{60}{119}-\dfrac{-12}{119}+\dfrac{1}{119}.12\)

\(B=\dfrac{73}{119}.12\)

\(B=\)\(\dfrac{876}{119}\)