7) log5 (3x + 4) - log5 (x + 2) = 28) log3 (x + 1) + log3 (x - 1) = 29) log7 (2x - 3) = log7 (x + 5)10) log4 (x² - 1) = log4 (2x + 2)
7) log5 (3x + 4) - log5 (x + 2) = 2
8) log3 (x + 1) + log3 (x - 1) = 2
9) log7 (2x - 3) = log7 (x + 5)
10) log4 (x² - 1) = log4 (2x + 2)