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Debora [2.8K]
3 years ago
14

When the sum of a number and 3 is subtracted from 13 the result is 7

Mathematics
2 answers:
just olya [345]3 years ago
7 0
The sum of the number is 3. 7+3=10
13-10=3.
BaLLatris [955]3 years ago
4 0
13 - (n + 3) = 7
13 - n - 3 = 7
10 - n = 7
10 - n - 7 = 0
3 - n = 0
n = 3
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