我想問一D正負數...(還有幾題數無解!)

(1)
(-32)(+3) / (-24)(-2)
(-96) / (48) [負正得負 , 負負得正]
= -2

(2)
(+128) / (-16)(+15)
=(+128) / (-240)
= - 8 / 15

(3)
(-294) / [(-7)(+6)]
=(-294) / (-42)
=7

(4)
[(2 / +3) + (5 / -3) - (3 / -2)] / [(1/-2) + (1/3)(-6)]
=(1/2) / 1
=1/2

(5)
[(2 / -5)(-2)-(3/5)(+4)] / [(2/-5)+(3/-5)(+2)
=( 4/5 - 12/5 ) / (2/-5 )+ (-6/5)
=( -8/5) / (-8/5)
=1

1. (-32)(+3)/(-24)(-2)
= -32-3/-24-2
= -29/-26
=+1又26分之3
2. (+128)/(-16)*(+15)
=(+128)/-16*15
=+128/240
=15分之8
3. (-294)/[(-7)*(+6)]
=(-294)/[-7*6]
= -294/-42
=+7
4. [(+3分之2)+(-3分之5)-(-2分之3)]/[(-2分之1+3分之1)(-6)]
=[+3分之2 - 3分之5 + 2分之3] / [(-6分1)(-6)]
=2分1 / +1
=2分1
(5)[(-5分之2)(-2)-(+5分之3)(+4)]/[(-5分之2)+(-5分之3)]*(+2)
=(5分4 - 2又5分2) / -1*(+2)
= -1又5分3 / -2
= +5分4