Answer:
d = 4
Explanation:
Given
- 24 + 12d = 2(d - 3) + 22 ← distribute and simplify right side
- 24 + 12d = 2d - 6 + 22
- 24 + 12d = 2d + 16 ( subtract 2d from both sides )
- 24 + 10d = 16 ( add 24 to both sides )
10d = 40 ( divide both sides by 10 )
d = 4