3lg(10³)10*log(6²)6³-log(7²)(7^-1)=3*1/3*3/2-(-1/2)=3/2+1/2=2
log(h^12)(h^6)+log(h)(d/∛a)=1/2+log(h)(d/∛a)
log(x)1/216=2
x²=1/6³
x=-1/6√6
x=1/6√6
log((1/5)²)((1/5)^-3)=-3/2
x=-1,5
log(x)(9/10)²=-2
x^-2=(9/10)²
x²=(10/9)²
x=10/9=1 1/9
log((1/2)³(((1/2)^5)=5/3=1 2/3