Question 437371
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Hi
*[tex \large\ \ log_bx + log_by = log_b(xy) ]
*[tex \large\ \ log_bx - log_by = log_b(x/y) ]
*[tex \large\ \ nlog_bx = log_b(x^n) ]

*[tex \LARGE\ \ log_9(7/8y) \ \ = log_9(7) - log_9(8y) ]