2091. If a/2 + 4 = 7 / 2, the a = ?
- A. 1
- B. -1
- C. 3
- D. 2
Check answer and explanation
Answer: -1
Explanation subtract 4 from both sides: a/2 + 4 - 4 = 7/2 - 4 a/2 = 7/2 - 8/2 Simplify the right side of the equation by subtracting the fractions: a/2 = (7 - 8)/2 a/2 = -1/2 Multiply both sides of the equation by 2 to eliminate the fraction: 2 * (a/2) = 2 * (-1/2) a = -1