What is 2/1 of 19?

How to calculate 2/1 of 19?

1. Multiply the whole number by the numerator of the fraction: 19 × 2 = 38
2. Divide this result by denominator of the fraction: 38/1 = 38

How does it work?

The principle behind finding a fraction of a number, such as 2/1 of 19, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{2}{1}=\frac{x}{19}$ (where x represents 2/1 of 19)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $2\times 19=1x$
2. Which gives: $38=1x$
3. Divide both sides by 1 to isolate x: $\frac{38}{1}=\frac{1x}{1}$
4. Which gives the result: $\frac{38}{1}=x$

Thus, 2/1 of 19 is equal to 38/1 (or 38 in its decimal form).