Which steps are needed to solve this equation? b+6= 21

Answer:
15
Step-by-step explanation:
Step 1:
b + 6 = 21 Equation
Step 2:
b = 21 - 6 Subtract 6 on both sides
Step 3:
b = 15 Subtract
Step 4:
15 + 6 = 21 Check Answer
Answer:
b = 15
Hope This Helps :)