10,101,010 + 01,111 = 10,102,121
Although you didn't say so, we suspect that you may have meant
the two numbers in the question to be binary (base-2) numbers.
If so, then
| 0 | 0 | 0 | 0= (170)10
0 | | | | = (15)10
Their sum is (185)10
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In any base other than 2 (ie other than binary): 10101010 + 01111 = 10102121 In base 2 (binary): 10101010 + 01111 = 10111001
170
Decimal: 170Hex: AA
2 + 8 + 32 + 128 ie 170
how to express the sum 257 and 431 in decimal form