0
Anonymous
13 + 15 = 28
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28
17 plus 15 plus 13 equals 45.
3 + 11 + 11 + 11 + 12 + 13 + 15 + 15 + 16 + 17 + 19 = 143
-15
10/15 + 3/15 = 13/15 13/15
The expression 15-t plus 8t-13 simplifies to 7t + 2.