What is 6/7 of 13?

How to calculate 6/7 of 13?

1. Multiply the whole number by the numerator of the fraction: 13 × 6 = 78
2. Divide this result by denominator of the fraction: 78/7 = 11.142857142857

Since 78/7 is an improper fraction, the result could also be expressed as a mixed number: 11 1/7

How does it work?

The principle behind finding a fraction of a number, such as 6/7 of 13, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{6}{7}=\frac{x}{13}$ (where x represents 6/7 of 13)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $6\times 13=7x$
2. Which gives: $78=7x$
3. Divide both sides by 7 to isolate x: $\frac{78}{7}=\frac{7x}{7}$
4. Which gives the result: $\frac{78}{7}=x$

Thus, 6/7 of 13 is equal to 78/7 (or 11.142857142857 in its decimal form).