Simple Equations

Here are some mathematical equations for you to solve.
Can you figure out the answers?

10c - 2 = 88
c =
10n - 2 = 88
n =
3x - 6 = 3
x =
8u - 5 = 67
u =
10d + 7 = 27
d =
4b - 1 = 11
b =
9k - 9 = 18
k =
10v - 4 = 16
v =
3z - 10 = 5
z =
4z + 5 = 9
z =

 

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