use of formulae

a. y=√(x^3-z) [x]
y^2 = x^3 - z
x^3 = y^2 + z
x = (y^2 + z)^(1/3)
b. T=2TT√l/g [g]
T/2TT = √l/g
l/g = T^2 / 4TT^2
g = 4lTT^2 /T^2
c. 3a=2+5/(2-b) [b]
3a - 2 = 5/(2-b)
2 - b = 5/(3a - 2)
b = (6a-4-5)/(3a-2)
b = 3(2a-3)/(3a-2)
d. A(1+r%)^2=s [r]
1 + r% = (s/A)^(1/2)
r = 100(s/A)^(1/2) - 100
e. d=i/l+i [i]
dl + di = i
i(1-d) = dl
i = dl/(1-d)
f. az+b/cz+d=w [z]
az + b = cwz + wd
z(a-cw) = wd - b
z = (wd-b)/(a-cw)


2010-08-23 20:11:44 補充：
請在適當的地方加上括號,否則只能猜測題主的意向。

請題主把b., c., e., f.標示清楚些。