5 balloons = 3 red balloons + x blue balloons -3 red balloons - 3 red balloons
2 = x blue balloons
2 blue balloons
she will give 2 away depending on how many she wants to
Kathy gave away 2 blue balloons. This was determined by subtracting the 3 red balloons she gave away from the total of 5 balloons. Therefore, Kathy must have given away 2 blue balloons.
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