When the numerator of a fraction decreases while the denominator remains the same, the size of the fraction decreases.
When the numerator of a fraction decreases in size while the denominator stays the same, the size of the fraction decreases. This is because the numerator represents the part of the whole, so reducing it makes the fraction smaller. For example, if you have 2/5 and change it to 1/5, the fraction becomes smaller.
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