because it is easier than adding and subtracting so many times??
Chat with our AI personalities
When you divide by fractions, you invert and multiply.
In order to divide two fractions, multiply the first times the reciprocal of the second.
" ... multiply by the RECIPROCAL of the divisor.
To multiply two fractions, multiply the numerators together, then the denominators, then put the new numerator over the new denominator. Simplify if you can. To divide fractions, invert the second fraction and multiply as just described.
The dissimilarity of the fractions doesn't matter. To multiply two fractions, multiply the numerators together, then the denominators, then put the new numerator over the new denominator. Simplify if you can. To divide fractions, invert the second fraction and multiply as just described.