Question 1079753
I assume log is base 10
:
9 + log(8) - 7b = 12
:
-7b = 3 - log(8)
:
b = (log(8) - 3) / 7
:
log(8) = 3log(2) / log(10) = 3log(2)
:
b = (3log(2) / 7) - (3/7)
:
b = (3/7) * (log(2) - 1)
:
b = −2.0969 / 7
: