Answer:
ab = 27
Explanation:
Hello!
First, let's find the values of a and b.
Solve for a in both equations:
- a + b = 12; a = 12 - b
- a - b = 6; a = 6 + b
12 - b and 6 + b are equivalent, as they are both equal to a, so solve for b.
Solve for b
- 12 - b = 6 + b
- 6 - b = b
- 6 = 2b
- 3 = b
The value of b is 3. We can find a by substituting 3 for b in any of the original equations.
Solve for a
- a + b = 12; b = 3
- a + 3 = 12
- a = 9
The value of a is 9.
We can find ab by substituting the values that we found.
Solve for ab
ab is 27.