Find the variable expression that interprets the math sentence for:
Eighty-two plus a number, subtracted from onehundred minus two.

Let x represent the unknown number.
a:(82 + x) - (100 - 2)
b:(100 - 2) - (82 + x)
c:(100 - 2) + (82 + x)
d:(82 + x) - (2 - 100)