Answer :
Answer: 11
Step-by-step explanation:
1. Evaluate 2a when a = 1/2
2a
2 x (1/2) = 1
2. Evaluate 3b when b = 7
3b
3x7 = 21
3. Put the pieces of the expression back together
21 - 1 -9
4. Solve
11
Answer: 11
Step-by-step explanation:
1. Evaluate 2a when a = 1/2
2a
2 x (1/2) = 1
2. Evaluate 3b when b = 7
3b
3x7 = 21
3. Put the pieces of the expression back together
21 - 1 -9
4. Solve
11