there were some ducks in the pond.Twenty-eight ducks flew away. Seven more arrived at the pond. Now there are 43 ducks in the pond. How many ducks were in the pond to start?
64
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To find the number of ducks that were in the pond to start, we can follow a simple calculation process.
Let's assume the number of ducks in the pond to start was "x".
According to the information provided:
- Twenty-eight ducks flew away, which means x - 28.
- Seven more ducks arrived at the pond, so the new count becomes x - 28 + 7.
- The current count of ducks in the pond is 43.
Therefore, we can set up the equation as follows:
x - 28 + 7 = 43
To solve for x, we can simplify the equation:
x - 21 = 43
Next, we isolate x by adding 21 to both sides of the equation:
x = 43 + 21
Evaluating the right side of the equation gives us:
x = 64
Hence, there were originally 64 ducks in the pond.
x -28 + 7= 43
solve for x