Câu hỏi của lê khương bảo ngọc

Question

A = [ 3 + 1/6 ] - 2/5

----------------------

[5 - 1/6] +7/10

ai làm nhanh và đúng mk tk cho

๖ACE✪ʟê❖тʀí❖тιêɴ︵²⁰⁰7 (TMS)★ · Accepted Answer

$A=\left[3+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{3}{1}+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{18}{6}+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{18+1}{6}\right]-\frac{2}{5}$

$A=\frac{19}{6}-\frac{2}{5}$

$A=\frac{95}{30}-\frac{12}{30}$

$A=\frac{83}{30}$

Câu trả lời:

$A=\left[3+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{3}{1}+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{18}{6}+\frac{1}{6}\right]-\frac{2}{5}$

$A=\left[\frac{18+1}{6}\right]-\frac{2}{5}$

$A=\frac{19}{6}-\frac{2}{5}$

$A=\frac{95}{30}-\frac{12}{30}$

$A=\frac{83}{30}$

Song Ngư (๖ۣۜO๖ۣۜX๖ۣۜA) · Answer

$A=\frac{\left(3+\frac{1}{6}\right)-\frac{2}{5}}{\left(5-\frac{1}{6}\right)+\frac{7}{10}}$

$A=\frac{\frac{19}{6}-\frac{4}{10}}{\frac{29}{6}+\frac{7}{10}}$

$A=\frac{\frac{19.5-3.4}{30}}{\frac{29.5+7.3}{30}}$

$A=\frac{95-12}{30}:\frac{145+21}{30}$

$A=\frac{83}{30}:\frac{166}{30}$

$A=\frac{83}{30}.\frac{30}{166}$

$A=\frac{83}{166}$