Answer:
a, b, + d
Explanation:
You can start by using the distributive property and factor the equation out.
![-(2)/(5) (15-20d+5c)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/mye9qhbi5czw2o4rp0ee6o5ia577se40z3.png)
becomes
![15(-(2)/(5) ) - 20d(-(2)/(5) ) +5c(-(2)/(5) )](https://img.qammunity.org/2021/formulas/mathematics/middle-school/2ej0idehko4ysuk4bi7udbaajjx59k6xpg.png)
which simplifies to
![-6+8d-2c](https://img.qammunity.org/2021/formulas/mathematics/middle-school/34264z45cumhhahym3d4rnvpsixdp8dhu0.png)
So that's one answer.
If you multiply that answer times 5 you get
![-30+40d-10c](https://img.qammunity.org/2021/formulas/mathematics/middle-school/lebaz6qz5by0lxuscyh2zjwzykmmtbepg7.png)
and if you factor "-2" out of the original answer you get
![-2(3-4d+c)](https://img.qammunity.org/2021/formulas/mathematics/middle-school/z0vyu7x3wf3f922j6tx6da778tnmk5d048.png)
and that is all of the answers given.