Answer:
x = 107
Step-by-step explanation:
Using the rule of logarithms
[tex]log_{b}[/tex] x = n ⇒ x = [tex]b^{n}[/tex]
Given
[tex]log_{10}[/tex] (x - 7) = 2 , then
x - 7 = 10² = 100 ( add 7 to both sides )