Respuesta :

hayisforhorses
You isolate the variable, b.
2b+18=12
-18        -18   subtract 18 from each side
2b=-6
/2    /2             divide by two to get one b
b=-3
BradyArgo
What times 2, plus 18, equals 12? Answer: -3. -3x2 = -6 -6+18=12. The answer: B=-3