-20=-5log(d)

Rewrite the equation as -5log(d)=-20.

-5log(d)=-20

Divide each term in -5log(d)=-20 by -5.

-5log(d)-5=-20-5

Cancel the common factor of -5.

Cancel the common factor.

-5log(d)-5=-20-5

Divide log(d) by 1.

log(d)=-20-5

log(d)=-20-5

Divide -20 by -5.

log(d)=4

log(d)=4

Rewrite log(d)=4 in exponential form using the definition of a logarithm. If x and b are positive real numbers and b≠1, then logb(x)=y is equivalent to by=x.

104=d

Raise 10 to the power of 4.

10000=d

Rewrite the equation as d=10000.

d=10000

Solve for d -20=-5 log of d