Question

Find the difference 3 d and 7 d
​

Answer 1

-4d

Explanation:

3d - 7d

=> 3 x D - 7 x D

=> (3 - 7)(D)

=> -4 x D

=> -4d

Answer 2

`-4d`

Explanation:

We can subtract a term from another if they have the same variable. Both
`3d` and
`7d` have the variable
`d`, so we can subtract them.

When subtracting these terms, we subtract the coefficients and keep the variable.

So:

`3d - 7d = 3-7(d) = -4d`

Hope this helped!