18x19191919/21212121+88888/99999
18 x [19191919/21212121 + 88888/99999] = ?
18x19191919/21212121+88888/99999
18 x (19191919/21212121 + 88888/99999)=?
999 + 888 =
99999 + 16661 - 88888 =
246669 - 267812 =
Tinh gia tri cua tong sau:8+88+888+8888+88888
tìm tổng sau 8 88 888 8888 ..... 88888....888888.Biết số cuối có 88 chữ số 8.
\(18\times\left(\frac{19191919}{21212121}+\frac{88888}{99999}\right)=?\)
tính nhanh :
18 x \(\left(\frac{19191919}{21212121}\ +\ \frac{88888}{99999}\ \right)\)