Question 647479
We'll use properties: log(ab) = log(a) + log(b); log(x^a) = alog(x)

log(xy) + log(x^2y^5) = 21}}}
log(x) + log(y) + log(x^2) + log(y^5) = 21}}}
log(x) + log(x^2) + log(y^6) = 21}}}
log(x*x^2) = 21 - log(y^6)
log(x^3) = 21 - 6log(y)
3*log(x) = 21 - 6log(y)
log(x) = (21-6log(y))/3
10^log(x) = 10^((21-6log(y))/3)
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x = 10^({{{(21-6log(y))/(3)}}})