giải hộ tui đi mà
5/12 + 1/12 - 1/4 =7/12 - 1/4 = 7/12 - 3/12 = 4/12 =1/3
5/12+1/12-1/4=6/12-1/4=1/2-1/4=2/4-1/4=1/4
\(\frac{5}{12}+\frac{1}{12}-\frac{1}{4}\)
\(=\frac{5}{12}+\frac{1}{12}-\frac{3}{12}\)
\(=\frac{5+1-3}{12}\)
\(=\frac{3}{12}\)
\(=\frac{1}{4}\)
\(\frac{5}{12}+\frac{1}{12}-\frac{1}{4}=\frac{5}{12}+\frac{1}{12}-\frac{1\times3}{4\times3}\)\(=\frac{5}{12}+\frac{1}{12}-\frac{3}{12}=\frac{5+1-3}{12}=\frac{3}{12}=\frac{1}{4}\)
5/12 + 1/12 - 1/4 = 6/12 - 1/4 = 2/4 - 1/4 =1/4