The given equation is
.
Replace a in
\ \
Choose a starting value using mental math.
\
and
so 1 is too low and 10 is too high.
Then a lies between 1 and 10
\| \
a \ | \
\
| \
\
Values of | \
| \
4 \ | \
\
| \
\
22 \ \ \ | \
| \
5 \ \ \ | \
\
| \
\
30 \ \ \ | \
| \
6 \ \ \ | \
\
| \
\
38 \ \ \ | \
Since a = 6 makes the equation is equals
is 6.
The solution set is 6.