a) k = 7n //:7
n = [tex]\frac{k}{7}[/tex]
b) a = k + 6
k = a - 6
c) z = 7 - y
y = z + y
d) d = a + bc
d - a = bc //:b
c = d - a / b
e) x = 2k + 1
x - 1 = 2k //:2
k = x - 1 / 2
f) 2k = 7n + 5
2k - 5 = 7n //:7
n = 2k - 5 / 7
g) t = [tex]\frac{1}{a}[/tex] - 5xa
t - [tex]\frac{1}{a}[/tex] = - 5xa //: (-5a)
x = t - [tex]\frac{1}{a}[/tex] : (-5a)
h) w = 1 / 2a + [tex]\frac{p}{a}[/tex] //· a
wa = [tex]\frac{1}{2}[/tex] + p //:w
a = [tex]\frac{1}{2}[/tex] + p / w
