Question

Find the difference 3 d and 7 d​

Answer 1

Answer:

-4d

Step-by-step explanation:

3d - 7d

=> 3 x D - 7 x D

=> (3 - 7)(D)

=> -4 x D

=> -4d

Answer 2

Answer:

$-4d$

Step-by-step 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!