Question

tìm x: 140 - 100 : x = 20

Answer 1

140-100:x=20

  100:x=140-20

  100:x=120

         x=\(\dfrac{5}{6}\)

Answer 2

\(140-100:x=20\)

\(\Rightarrow100:x=120\)

\(\Rightarrow x=\dfrac{5}{6}\)

Answer 3

Ta có: 140-100:x=20

nên 100:x=120

hay \(x=\dfrac{5}{6}\)