Question

tinh nhanh\(P=\frac{\frac{2}{3}-\frac{1}{4}+\frac{5}{11}}{\frac{5}{12}+1+\frac{7}{11}}\)

Answer 1

(2/3-1/4+5/11): (5/12+1+7/11)=115/132:261/132=115/261

Answer 2

P = 2/3 - 1/4 + 5/11  /  5/12 + 1 + 7/11

P = 12.11.(2/3 - 1/4 + 5/11)  /  12.11.(5/12 + 1 + 7/11)

P = 4.2.11 + 3.11 + 12.5  /  11.5 + 12.11 + 7.12

P = 88 + 33 + 60 / 55 + 132 + 84

P = 181 / 271