Question

How do you solve `\frac { x } { 3} + \frac { x } { 4} = 7`?

Answer 1

`x=12`

Explanation:

`x/3 + x/4 = 7`
`(4/4*x/3) + (3/3 *x/4)`
`4x/12 + 3x/12 = 7`
`7x/12 = 7`
`7x = 84`
`x = 12`