Question

[Phạm Viết Đạt]

giúp mình giải với

Answer 1

[Member lỗi thời :>>]

1) \(12\frac{1}{2}:\frac{-2}{3}-9\frac{1}{2}:\frac{-2}{3}\)

\(=12\frac{1}{2}.\frac{-3}{2}-9\frac{1}{2}.\frac{-3}{2}\)

\(=\left(12\frac{1}{2}-9\frac{1}{2}\right).\frac{-3}{2}\)

\(=3.\frac{-3}{2}=-\frac{9}{2}\)

Answer 2

[Member lỗi thời :>>]

2) \(\frac{3}{6}+\left(\frac{-2}{4}\right)^3-4.\frac{-1}{2^2}-2021^0\)

\(=\frac{1}{2}+\left(\frac{-1}{2}\right)^3-4.\frac{-1}{4}-1\)

\(=\frac{1}{2}+\frac{-1}{8}-\left(-1\right)-1\)

\(=\frac{3}{8}\)