Question 446792
1n (x+7) + 1n (x+3) = 1n77
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It's LN, not 1n, means natural log.
(x+7) * (x+3) = 77
Check for integer solution.
77 has only 2 factors, 7 and 11
x+7 = 11
x+3 = 7
--> x = 4