Question

[le quang minh]

1, Tính hợp lí:

A=\(\frac{4-\frac{1}{23}-\frac{56}{39}-\frac{25}{47}}{\frac{5}{69}+\frac{5}{117}+\frac{5}{141}}\)

Answer 1

[le quang minh]

các bạn nhanh lên, mình cần gấp lắm

Answer 2

[mam cay xanh]

\(\frac{4-\frac{3}{69}-\frac{168}{117}-\frac{75}{141}}{\frac{5}{69}+\frac{5}{117}+\frac{5}{141}}\)

=\(\frac{\frac{66}{69}-\frac{66}{117}-\frac{66}{141}}{\frac{5}{69}+\frac{5}{117}+\frac{5}{141}}\)

=\(\frac{66\left(\frac{1}{69}+\frac{1}{117}+\frac{1}{141}\right)}{5\left(\frac{1}{69}+\frac{1}{117}+\frac{1}{141}\right)}\)

=\(\frac{66}{5}\)