Solve for “b” in the following equation: A = 1/2 (a+b)

Answer 1

To solve for \( b \) in the equation

\[ A = \frac{1}{2} (a + b), \]

follow these steps:

1. Multiply both sides by 2 to eliminate the fraction:

\[ 2A = a + b. \]

2. Rearrange the equation to isolate \( b \):

\[ b = 2A - a. \]

Thus, the solution for \( b \) is

\[ b = 2A - a. \]