Question

Question #6baff

Answer 1

See explanation...

Explanation:

`N` is short for Numerator.

`D` is short for Denominator.

Fractions typically take the form `N/D` where `N` is the numerator and `D` the denominator.

In a reduced fraction, the numerator and denominator have no common factor larger than `1`.

So in the given example, Tanya calculated:

`76/91 xx 7/19 = (76xx7)/(91xx19) = (4xxcolor(red)(cancel(color(black)(19)))xxcolor(green)(cancel(color(black)(7))))/(color(green)(cancel(color(black)(7)))xx13xxcolor(red)(cancel(color(black)(19)))) = 4/13`

So:

`N = 4`, `D = 13` and `N+D = 17`