Question

TÍNH:

\(A=\frac{\frac{5}{7}-\frac{5}{9}+\frac{5}{11}}{\frac{4}{7}-\frac{4}{9}+\frac{4}{11}}-\frac{1}{4}\)

Answer 1

dễ thôi mà

Answer 2

A\(=1\)

Answer 3

A=\(\frac{5\left(\frac{1}{7}-\frac{1}{9}+\frac{1}{11}\right)}{4\left(\frac{1}{7}-\frac{1}{9}+\frac{1}{11}\right)}\)+\(\frac{1}{4}\)

A=\(\frac{5}{4}+\frac{1}{4}\)

A=\(\frac{6}{4}\)=\(\frac{3}{2}\)

k cho mk nha bn

Answer 4

xin lỗi nhé mk nhầm dấu, phải là:

A=\(\frac{5\left(\frac{1}{7}-\frac{1}{9}+\frac{1}{11}\right)}{4\left(\frac{1}{7}-\frac{1}{9}+\frac{1}{11}\right)}\)-\(\frac{1}{4}\)

A=\(\frac{5}{4}-\frac{1}{4}\)

A=1

k cho mk nha bn