a.Tính nhanh:A=1003.2005-1002/1003+2005.1002.5-5/11+5/7-5/17+5/2004/13/2004-13/17+13/7-13/11+13
a) Tính nhanh \(A=\frac{1003\cdot2005-1002}{1003+2005\cdot1002}\cdot\frac{5-\frac{5}{11}+\frac{5}{7}-\frac{5}{17}+\frac{5}{2004}}{\frac{13}{2004}-\frac{13}{17}+\frac{13}{7}-\frac{13}{11}+13}\)
b) So sánh \(2002^{303}\)và \(303^{202}\); \(31^{11}\)và \(17^{14}\)
a) -5/11 + ( -6/11 + 1 )
b) -13/17 + ( 13/-21 + -4/17 )
c) -5/12 . 7/-17 . 9/-20
d) 13/17 . 4/-5 + 13/17 . -3/4
e) -5/7 . 2/11 + -5/7 . 9/11 + 5/7
f) -2/5 . (-6) + 3/4 . 4/-10
bài 1 Tính:
a) 5/17 * 8/-7+8/17*-7/3+-7/3*4/17
b) -10/13 + 5/17 - 3/13 + 12/17 - 11/20
giúp tớ vs ạ. Tớ CẢM ƠN
*tớ thêm một câu nữa ạ
c) 5/9 * 7/13 + 5/9 * 9/13 + 3/13 * -5/9
5/9 × 8/17+ 3/17 : 9/7 - 5/9 7/3 × 6/ 11 + 7 / 11 - 5 /13 + 6/ 13
a) -5/12 . 7/-17 . 9/-20
b) 13/17 . 4/-5 + 13/17 . -3/4
c)-5/7 . 2/11 + -5/7 . 9/11 + 5/7
d)-2/5 . (-6) + 3/4 . 4/-10
tính a,13/17 . 5/11 -7/13 .5/11 .4/17 -2/5.6/13 b,1/2+1/3.1/4-1/5:1/6 so sánh n+2/n+3 và n+1/n+2
(13/-10 - -4/13)+11/10 A=-5/9+8/15+ -2/11 + 4/-9 + 7/15 B=10/17-5/13- -7/17 - 8/13+11/25 (3/4-1/6):2/3 (31/10-5/2).3-2 Giải chi tiết giúp bngoc ạ cmon trước💖