Question

How do you combine `(3x) / 10 + (9x) / 10`?

Answer 1

`(6x)/5`

Here's how I did it:

Explanation:

`(3x)/10 + (9x)/10`

Since both expressions contain the same denominator, that means we can combine the two expressions into one fraction:
`(3x+9x)/10`

Since `3x` and `9x` are like terms, that means we can also combine/add them:
`(12x)/10`

We can still simplify this by dividing both numerator and denominator by their greatest common factor (GCF), which is `2`:
`(12x)/10 color(blue)(-: 2/2)`

Therefore, the answer is:
`(6x)/5`

Hope this helps!