Multiply both the numerator (top) and the denominator (bottom) of the fraction by any non-zero integer or divide both by any common factor. You will have an equivalent fraction. The best integer to select is 10, so no multiplication is required, simply the addition of a 0.
Thus 4/9 = 40/90 = 400/900 and so on.
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if you can divide whole numbers, turn the fraction into a whole number by finding its equivalent and replacing the fraction with that equivalent. Then divide the new number which should be whole and you have your answer.
It is finding an equivalent fraction.
A fully reduced fraction is the one which is reduced to the lowest terms by finding an equivalent fraction in which the numerator and denominator are as small as possible.
Multiply both the numerator (top) and the denominator (bottom) of the fraction by any non-zero integer or divide both by any common factor. You will have an equivalent fraction or equivalent ratio.
The top line of a fraction is called the "numerator". This serves to "numerate" the number of objects that you are finding a fraction of. For example, in the fraction 3/4, you are finding three quarters of something else.