Question

5log25/24-3log80/81-7log15/16​

Answer 1

=5log(25/24)−3log(80/81)−7log(15/16)

=5log(25)−5log(24)−3log(80)+3log(81)−7log(15)+7log(16)

=5log(52)−5log(23∗3)−3log(24∗5)+3log(34)−7log(3∗5)+7log(24)

=10log5−15log2−5log3−12log2−3log5+12log3−7log3−7log5+28log2

=log2

Amannnscharlie