Because that is just how it works mathematically If you divide one vulgar (or common) fraction by a second vulgar fraction, the rule is: Invert the second fraction and then multiply them together. It is too difficult to explain why this works, using typed explanation on the computer, but just accept that it works.
To divide by a fraction, invert the divisor and multiply: 5/8 ÷ 5/3 = 5/8 x 3/5 = 3/8
When dividing one fraction by another, invert the second fraction and multiply them.
Invert the fraction and multiply.
To divide by a fraction, invert the divisor and multiply: 7/8 ÷ 3/5 = 7/8 x 5/3 = 35/24 = 111/24
You may be referring to the rule for dividing fractions. To divide one fraction by another, you invert the second fraction (exchange numerator and denominator), and multiply instead.
Convert the mixed number into an improper fraction then divide the fraction and improper fraction as normal (invert the divisor and multiply) and simplify the result (including converting any improper fraction into a mixed number)
To divide one fraction (the dividend) by another (the divisor), invert the divisor and multiply the fractions together: eg 2/35 ÷ 4/5 = 2/35 × 5/4 = (2×5)/(35×4) = 10/140 = 1/14
Divide it by the divisor.
To divide by a fraction, invert the divisor and multiply: 5/8 ÷ 5/3 = 5/8 x 3/5 = 3/8
Convert the mixed number to a fraction and invert numerator and denominator
Invert the fraction and multiply.
When dividing one fraction by another, invert the second fraction and multiply them.
You invert the second fraction then divide the whole numbers and there is your answer
To divide by a fraction, invert the divisor and multiply: 7/8 ÷ 3/5 = 7/8 x 5/3 = 35/24 = 111/24
You may be referring to the rule for dividing fractions. To divide one fraction by another, you invert the second fraction (exchange numerator and denominator), and multiply instead.
When you wish to divide by a fraction, you would flip the divisor and multiply by the new fraction.
To divide by a fraction, invert the divisor and multiply: 8/1 ÷ 3/4 = 8/1 x 4/3 = 32/3 = 102/3