The GCF refers to integers, not fractions. You can find the GCF of the numerator and denominator of a fraction (if they are integers), but you will not be able to find the GCF of two fractions.
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To put a fraction in its simplest form, find the GCF of the numerator and denominator and divide them both by it. If the GCF is 1, the fraction is in its simplest form.
To turn a percent into a fraction, put it over 100. To put a fraction in its simplest form, find the GCF of the numerator and denominator and divide them both by it. If the GCF is 1, the fraction is in its simplest form. 75% = 75/100 = 3/4
To turn a percent into a fraction, put it over 100. To reduce a fraction to its lowest terms, find the GCF of the numerator and the denominator and divide them both by it. If the GCF is 1, the fraction is in its simplest form.
To convert an improper fraction to a mixed number, divide the denominator into the numerator. The answer is the whole number. Put any remainder over the original denominator to create the fraction part. Any fraction can be put into simplest form by finding the GCF of the numerator and denominator and dividing them both by it. If the GCF is 1, the fraction is in its simplest form.
To convert a mixed number to an improper fraction, multiply the denominator by the whole number, add that total to the numerator and put the whole thing over the original denominator. To put a fraction into its simplest form, find the GCF of the numerator and the denominator and divide them both by it. If the GCF is 1, the fraction is in its simplest form.