Question

evaluate log10(x-5)=1

Answer 1

$log_{10}(x - 5) = 1$
So by converting it into exponential form,
${10}^{1} = x - 5 \\ x - 5 = 10 \\ x = 15$
Or if u want to keep it in logarithm format, we can convert 1 to log
$log_{10}(x - 5) = log_{10}(10)$
As logarithm of any number to its own base is 1
By comparison,
$x - 5 = 10 \\ x = 15$