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Anonymous
9n + 18 = 81
9n = 63
n = 7
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9n+9=81 9n=72 n=8
you have 9n+17=-1 -17 -17 9n=-18 /9 /9 n= -2
n2 + 9n + 18 = (n + 6)(n + 3)
n = 26
The equation N-10 plus 9N-e equals 10N-3. This is a math problem.