幾題數!!!急!!!!10點!!!

a) (+5)+(-7) = -2
b) (-7)+(-9) = -16
c) (-7)-(-12) = +5
d) (+5)-(-3) = +8
e) (-3)x(+9)=-27
f) (-7)x(-6)= +42
g) (-3)除(+6)= -2
h) (-5)除(-15)= 1/3
i) (+13)除(-39)= -1/3
j) (-5)-(-5分之2)= -23/5
k) (-16)x(-4分之3)=+ 12
l) (-6分之1)x(-2分之3)= 1/4
m) (-1)-(-3)+(+9)=11
n) (-36)+(-9)-(-18)= -27
o) (-8)x(-2)x(+3)= 21
p) (+3)除(-7)除(+7分之1)= -3

2007-08-13 11:59:51 補充：
sorry唔小心計錯左少少野g)= -1/2 o)= 48

a)-2
b)-16
c)5
d)8
e)-27
f)42
g)-0.5
h)1/3
i)-1/3
j)2
k)12
l)0.25
m)11
n)63
o)48
p)-3

a.-2
b.-16
c.5
d.8
e.-27
f.42
g.-0.5
h.3
i.-1/3
j.2
k.12
l.0.25
m.11
n.63
o.48
p.-3

(a) 5-7 = -2
(b) -7+9 = +2
(c) -7+12 = +5
(d) 5+3 = +8
(e) -3 x 9 = -27
(f) -7 x -6 = +42
(g) -3/6 = -1/2
(h) -5/(-15) = -1/3
(i) 13/(-39) = - 1/3
(j) -5 +2/5 = - 4又5分之3
(k) -16 * (-3/4) = +12
(l) (-1/6) (-3/2) = +3/12 =+1/4
(m) -1+3+9 = +11
(n) -36-9+18 = -27
(o) (8 x 2 x 3) = 48
(p) -3/7/(1/7) = -3

a)-2
b)-16
c)5
d)8
e)-27
f)42
g)-0.5
h)1/3
i)-1/3
j)2
k)12
l)0.25
m)11
n)63
o)48
p)-3