\

The replacement set is \ \

The equation is 

Replace b in with each value in the replacement set and check

whether the equation is true or not. \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

\ b \	\ \	\ True or false \
\ 12 \	\ \	\ False \
\ 17 \	\ \	\ True \
\ 18 \	\ \	\ False \
\ 21 \	\ \	\ False \
\ 25 \	\ \	\ False \

\

 Since b=17 makes the equation true, the solution of  is 17. \ \ The solution set is .