Explain how to divide two rational numbers

if they're both even, divide by two. rational numbers presume reduced fractions. Dividing rational numbers. If two numbers you want to divide, flip the 2nd and multiply.

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.