Solve the equations below and explain how you solved it by s

Solve the equations below and explain how you solved it by stating the rule or property of exponentials, logarithms or algebra that were used in each step.

Solution

84. log(x+7) -log 3 = log(7x+1)

log((x+7)/3)= log(7x+1)

(x+7)/3 = 7x+1

x+7= 21x +3

20x= 4

x=1/5

82. 3 log x = log 125

log x³=log 5³

x=5