B = - ( $ frac{5}{7 }$ - $ frac{4}{5}$ ) + ( $ frac{5}{2}$ - $ frac{4}{5}$ ) - ( $ frac{7}{2}$ - $ frac{5}{7}$ )

Question

B = - (  $ frac{5}{7 }$ - $ frac{4}{5}$ ) + (  $ frac{5}{2}$ - $ frac{4}{5}$ ) - (  $ frac{7}{2}$ - $ frac{5}{7}$ )

danthu · Answer

Đ&acirc;y nha   Xin  CTLHN nha

myngoc · Answer

`B=-(5/7-4/5)+(5/2-4/5)-(7/2-5/7)`   `B=-5/7+4/5+5/2-4/5-7/2+5/7`   `B=-5/7+5/7+4/5-4/5+5/2-7/2`   `B=0+0-1`   `B=-1`   `#Study well`

B = – ( $\frac{5}{7 }$ – $\frac{4}{5}$ ) + ( $\frac{5}{2}$ – $\frac{4}{5}$ ) – ( $\frac{7}{2}$ – $\frac{5}{7}$ )