Question

5.9^2:8=2x

Answer 1

\(2x=5.9^2:8\)

\(2x=5.81:8\)

\(16x=405\)

\(x=\dfrac{405}{16}\)

Answer 2

\(5\cdot9^2:8=2x\\\Rightarrow 2x=5\cdot81:8\\\Rightarrow2x=405:8\\\Rightarrow2x=\dfrac{405}{8}\\\Rightarrow x=\dfrac{405}{16}\\Vậy:x=\dfrac{405}{16}\)