14 + 6 + (-9) + (-14)
= [ 14 + (-14) ] + [ 6 + (-9) ]
= 0 + - 3
= - 3
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Các câu hỏi tương tự
a) (-7) + (-14) + 17
b) 14 + 6 + (9-) . 13
cần gấp
12/5 / 15/16 + 9/8 / 6/5 - 7/5 / 14/25 - 3/14 / 6/7
Mong m.n giúp mình!
6/18+-14/21,6/13+-14/39,
-3/21+6/42,,7/21+9/-36
bài 1 tính
a) (3/7+-9/8)+(5/8+-6/14)
b) (-5/7+3/11)+(-11/14+14/-11)
c)(-4/5+2/3)+(-5/4+19/5)+(7/3.2)
d)9/16.13/4-9/4.5/16+9/16.17/4
2*6*10+6*10*14+10*14*18+...+194*198*202/1*3*5+3*5*7+5*7*9+...+97*99*101
rút gọn
_1/3 . 6/7 + 4/7 : 9/14
6 1/2 - 14 3/7 : 9/13 - 3 4/7 : 9/13
d=43/37×23/15-43/37×8/15+31/37
E= -5/24×9/11- 5/24×2/11+7/12
a) 3/7– -11/14- 7/3×6/7
b) 6/5:3/2+ -2/3×9/14
6/-7+9/4.2/15-2/14