log 15 base 5 + log 20 base 5 - log 30 base 5 - log10 base 5
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Step-by-step explanation:
log 15 base 5+ log 20 base 5 - log 30 base 5 - log10 base 5
We can write it as,
log15/log5 + log 20 /log 5 - log 30 /log 5
- log10 / log 5
Now base is same,
(log15 + log20 - log30 - log10)/log 5
( log(15*20) - log (30*10) )/ log 5
(log300 - log300)/log 5
log (300/300)/log 5
log1/ log5
0/ log5
0 (answer)
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