Question

Answer 1

lm bài 1b

Answer 2

1.b.

\(\dfrac{9}{14}-\dfrac{5}{9}+\dfrac{3}{14}=\dfrac{9+3}{14}-\dfrac{5}{9}=\dfrac{12}{14}-\dfrac{5}{9}\)

\(=\dfrac{6}{7}-\dfrac{5}{9}=\dfrac{54}{63}-\dfrac{35}{63}=\dfrac{54-35}{63}=\dfrac{19}{63}\)

Answer 3

9/14 - 5/9 + 3/14 = (9/14 +3/14) - 5/9 = 6/7 - 5/9 = 1/7