Question

A = 8/13 × 7/12 + 8/13 × 5/12 - 1/12

 

Answer 1

A = \(\frac{8}{13}.\frac{7}{12}+\frac{8}{13}.\frac{5}{12}-\frac{1}{12}\)

A = \(\frac{56}{156}+\frac{40}{156}-\frac{1}{12}\)

A = \(\frac{96}{156}-\frac{1}{12}\)

A = \(\frac{96}{156}-\frac{13}{156}\)

A = \(\frac{96-13}{156}\)

A = \(\frac{83}{156}\)

Answer 2

Kết bạn với mik nha ^^

Answer 3

\(A=\frac{8}{13}\cdot\frac{7}{12}+\frac{8}{13}\cdot\frac{5}{12}-\frac{1}{12}\)

\(A=\frac{8}{13}\left(\frac{7}{12}+\frac{5}{12}\right)-\frac{1}{12}\)

\(A=\frac{8}{13}\cdot1-\frac{1}{12}\)

\(A=\frac{8}{13}-\frac{1}{12}\)

\(A=\frac{96}{156}-\frac{13}{156}\)

\(A=\frac{83}{156}\)