Answer:
8
Explanation:
The problem statement tells you ...
17/4 +6n = 7n -15/4
Subtract 6n -15/4:
32/4 = n = 8
The number is 8.
_____
Check
17/4 +6(8) = 7(8) -15/4
4 1/4 +48 = 56 -3 3/4
52 1/4 = 52 1/4 . . . . . . answer checks OK
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