Answer: B=2
Step-by-step explanation:
-12+3b-1=-5-b Equation
-5+12+1=8 Adding the common number together
3b+b=4b Adding the b's together
4b=8 solution
/4 to each side (division)
b=2
When you add the numbers together it adds or subtracts from both sides so it will end up being the opposite of what it was originally ( all negative become positive. But will be on the other side)