\(\left(20+9\frac{1}{4}\right):2\frac{1}{4}\) \(\left(6-2\frac{4}{5}\right).3\frac{1}{8}-1\frac{3}{5}:\frac{1}{4}\)

\(\frac{32}{15}:\left(-1\frac{1}{5}+1\frac{1}{3}\right)\) \(0,2.\frac{15}{36}-\left(\frac{2}{5}=\frac{2}{3}\right):1\frac{1}{5}\)

\(\frac{-3}{7}.\frac{5}{9}+\frac{4}{9}.\frac{-3}{7}+2\frac{3}{7}\) \(0,7.2\frac{2}{3}.20.0,375.\frac{5}{8}\)

bang 700

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1+2+3=6 bạn nha

5 x 5 x 5 x 5 = 25 x 25 = 625

ok

150 là đúng thi violympic rồi mà

vở nào ghi rõ ra

x - 1 = 12 + 13 + 1 

x = 12 + 13 + 1 + 1

x = 14 + 13 

x = 27

k cho tui