# Add ACD1_16 and 4231_16.

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The sum of the hexadecimal numbers `ACD1_16` and `4231_16` has to be determined.

As with adding decimal numbers start with the first digits from the right.

1 + 1 = 2

D + 3 = 0 + 1, the 1 is carried over

C + 2 + 1 = F

A + 4 = E

**The sum of `ACD1_16` and `4231_16` is **`EF02_16`