Question

How do you add `\frac { 4} { x } + \frac { 6} { x - 7}`?

Answer 1

`(7x-7)/(x^2-7x)`

Explanation:

`4/x+6/(x-7)=(color(red)x-7+color(red)(6x))/(x^2-7x)`
`color(white)(xxxxxxxx)=(7x-7)/(x^2-7x)`