\(\dfrac{-3}{8}.16\dfrac{8}{17}-0,375.7\dfrac{9}{17}\)
\(=\dfrac{3}{8}.\dfrac{-280}{17}-\dfrac{3}{8}.\dfrac{128}{17}\)
\(=\dfrac{3}{8}.\left(\dfrac{-280}{17}-\dfrac{128}{17}\right)\)
\(=\dfrac{3}{8}.-24\)
\(=-9\)
( -17/15-9/17) -( 2/3-9/17)
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
cách tính bài 32/17:9/2+35/17:9/3+35/17:9/4
a) -2/5+(-5/9+2/5)
b) 17/13-(4/13-11)
c) 3/5*18/17+3/5*9/17-3/5*10/17
5/9 × 8/17+ 3/17 : 9/7 - 5/9
5/9 × 8/17+ 3/17 : 9/7 - 5/9
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
5/9 × 8/17+ 3/17 : 9/7 - 5/9 7/3 × 6/ 11 + 7 / 11 - 5 /13 + 6/ 13
