Maths homework help pleasssee!?

make b the subject
g = 5 - (4a/b)
4a / b = 5 - g
1 / b = (5 - g) / 4a
b = 4a / (5 - g)


make z the subject
x = y / (2+z)
x(2 + z) = y
2 + z = y / x
z = (y / x) - 2
OR z = (y - 2x)/x


make g the subject
ah=10f / (5 - g)
5 - g = 10f / ah
g = 5 - (10f / ab)
OR g = (5ab - 10f) / ab


make b the subject
w - 1 = 5a / (1 + b)
(1 + b) = 5a / (w - 1)
b = [5a / (w - 1)] - 1
OR b = (5a - w + 1) / (w - 1)


make v the subject
L = (u + 4) / (4 + v)
4 + v = (u + 4) / L
v = [(u + 4) / L] - 4
OR v = (u - 4L + 4) / L

x = y /(2+z)
multiply both sides by 2+z
x(2+z) = y
2x+xz = y
xz = y-2x
z = (y-2x) / x

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w-1 = 5a /(1+b)
multiply both sides by 1+b
(1+b)(w-1) = 5a
w-1+bw -b = 5a
bw-b = 5a-1-w
b(w-1) = 5a-w+1
b = (5a-w+1) / (w+1)

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L = (u+4) /(4+v)

multiply both sides by 4+v
L(4+v) = u+4
4L + Lv = u+4
Lv = u+4 - 4L
v = (u+4-4L) / L

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