Final answer:
To find the number of birds flying, we can solve the equation (x/2) + 1 = 100, where x represents the number of birds. By isolating x, we find that there were 198 birds flying.
Step-by-step explanation:
To solve this problem, let's create an equation. Let x be the number of birds flying. According to the question, half of them plus one more makes 100. So, we can write the equation as (x/2) + 1 = 100. To solve this equation, we need to isolate x. First, subtract 1 from both sides: (x/2) = 99. Next, multiply both sides by 2 to get rid of the fraction: x = 198. Therefore, there were 198 birds flying.