Tommy writes -414 as a fraction using the same method he knows for positive mixed numbers. his work is shown:

multiply the whole number by the denominator: -4⋅4=-16-4·4=-16.
add the numerator: -16+1=-15-16+1=-15.
write this number over the original denominator: -414=-154-414=-154.

does this method work to correctly write -414 as a fraction?

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.