Answer:
a=-2
Step-by-step explanation:
Combine common variables on both sides.
3a-7a-28=10a
-4a-28=10a
Add variables to other side
-28=14a
Divide each side by 14
a=-2
The best answer for this question is A.
Best of luck.
Answer:
the second one
Step-by-step explanation:
Answer:
10x+4y+10z Hope I helped? :')
<u>Steps for answer!</u>
1. Expand by distributing terms.
6x+8y+10z+4(x-y)
2. Expand by distributing terms.
6x+8y+10z+4x-4y
3. Collect like terms.
(6x+4x)+(8y-4y)+10z
4. Simplify.
10x+4y+10z