Question

tìm x

a.35/28-x=5/14         b.6/7:x=2/3

mn trả lời giúp e lun ik e đang cần gấp

Answer 1

a: =>x=5/4-5/14=25/28

b: =>x=6/7:2/3=6/7*3/2=18/14=9/7

Answer 2

a) \(\dfrac{35}{28}-x=\dfrac{5}{14}\)

\(\dfrac{35}{28}-x=\dfrac{10}{28}\)

\(x=\dfrac{35}{28}-\dfrac{10}{28}\)

\(x=\dfrac{25}{28}\)

b) \(\dfrac{6}{7}:x=\dfrac{2}{3}\)

\(x=\dfrac{6}{7}:\dfrac{2}{3}=\dfrac{6}{7}\times\dfrac{3}{2}\)

\(x=\dfrac{9}{7}\)