log2 8 – log3 19
= log 2 23 – log3 9−1
= log2 23 – log3 3−2
Based on law of logarithm
= 3 log2 2 – (-2 log3 3)
But log2 2 = 1,
log3 3 = 1
So, = 3 + 2
= 5