Question

Answer 1

làm hết bài ở trên đây hả bạn

Answer 2

Câu 2:

\(a,\dfrac{29}{7}-x=\dfrac{9}{14}\\ x=\dfrac{29}{7}-\dfrac{9}{14}\\ x=\dfrac{58}{14}-\dfrac{9}{14}\\ x=\dfrac{49}{14}\\ x=\dfrac{7}{2}\\ b,\dfrac{7}{8}\times x=\dfrac{5}{3}\\ x=\dfrac{5}{3}:\dfrac{7}{8}\\ x=\dfrac{5}{3}\times\dfrac{8}{7}\\ x=\dfrac{40}{21}\\ c,x-\dfrac{11}{5}=\dfrac{2}{5}:\dfrac{2}{3}\\ x-\dfrac{11}{5}=\dfrac{2}{5}\times\dfrac{3}{2}\\ x-\dfrac{11}{5}=\dfrac{3}{5}\\ x=\dfrac{3}{5}+\dfrac{11}{5}\\ x=\dfrac{14}{5}\)

Answer 3

\(\dfrac{29}{7}-x=\dfrac{9}{14}\)

          \(x=\dfrac{29}{7}-\dfrac{9}{14}\)

          \(x=\dfrac{7}{2}\)

b) \(\dfrac{7}{8}\times X=\dfrac{5}{3}\)

            \(X=\dfrac{5}{3}\div\dfrac{7}{8}\)

             \(x=\dfrac{40}{21}\)

 c) \(x-\dfrac{11}{5}=\dfrac{2}{5}\div\dfrac{2}{3}\)

     \(x-\dfrac{11}{5}=\dfrac{2}{5}\times\dfrac{3}{2}\)

     \(x-\dfrac{11}{5}=\dfrac{3}{5}\)

     \(x=\dfrac{3}{5}+\dfrac{11}{5}\)

     \(x=\dfrac{14}{5}\)

Answer 4

x=297−914x=297−914

          78×X=5378×X=53

            x=4021x=4021

 c) x−115=25×32x−115=25×32

     x=35+115x=35+115