Question

Answer 1

\(x\times3\times\dfrac{1}{4}=12\\ x\times\dfrac{3}{4}=12\\ x=12:\dfrac{3}{4}\\ x=12\times\dfrac{4}{3}\\ x=16\)

Vậy x=16

Answer 2

\(\dfrac{Xx3}{4}=12\)

\(\dfrac{Xx3}{4}=\dfrac{12}{1}\)

\(\dfrac{Xx3}{4}=\dfrac{48}{4}\)

ta lấy 48 : 3 =16

vậy \(\dfrac{16x3}{4}=12\)