What is 5/7 of 63?

How to calculate 5/7 of 63?

1. Multiply the whole number by the numerator of the fraction: 63 × 5 = 315
2. Divide this result by denominator of the fraction: 315/7 = 45
3. Simplify by dividing both the numerator and denominator by their GCD (7):
   • 315/7 = 45
   • 7/7 = 1
4. Which gives: 45/1

How does it work?

The principle behind finding a fraction of a number, such as 5/7 of 63, is rooted in the method of cross-multiplication.

Consider the following proportion: $\frac{5}{7}=\frac{x}{63}$ (where x represents 5/7 of 63)

1. Using the cross-multiplication method, multiply both numerators by their opposite denominators: $5\times 63=7x$
2. Which gives: $315=7x$
3. Divide both sides by 7 to isolate x: $\frac{315}{7}=\frac{7x}{7}$
4. Which gives the result: $\frac{315}{7}=x$ (or $\frac{45}{1}=x$)

Thus, 5/7 of 63 is equal to 45/1 (or 45 in its decimal form).