Question 570185
The general rules are {{{ log(a*b) = log(a) + log(b) }}}
and {{{ log(a/b) = log(a) - log(b) }}}
Just use the rules in reverse 
also, {{{ b*log(a) = log(a^b) }}}
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{{{ 2*log(x) + 3*log(7) - 6*log(z) }}}
{{{ log(x^2) + log(7^3) - log(z^6) }}}
{{{ log( (x^2*7^3)/z^6) }}}