\(A=\frac{999999999}{2}-\frac{999999999}{3}-\frac{999999999}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot2-999999999}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot\left(2+1\right)}{6}\)
\(=\frac{999999999\cdot3-999999999\cdot3}{6}=\frac{0}{6}=0\)
vậy A=0
tôi thề là A = 0
tôi vừa tính xong
đúng hơn là tính máy tính
A=999999999.(\(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\))=999999999.0=0=A