I didn't put all solving, but this is a part of solving of an activity in my book
-1/15 [3 log(1/5) + 4 log(4/15) + 8 log(8/15)]
-1/15[-3 log(5) + 4 (log 4 - log 15) + 8 (log 8 - log 15)]
-1/15[-3 log(5) - 4 log(3x5) - 8 log(3x5) + 4log(2)^2 + 8 log(2)^3]
1/15[ 15 log(5) + 12 log(3) - 32]
Then the rest of the solve ....
How did he get from the first (bold statement) to the second (bold statement)?
Thanks in advance <3