I'll treat these like they're two seperate problems because how you set it up they're not together. If it's one whole problem please tell me and I'll solve it that way. :-)
First one: 3x+9+8x + 12
Collect like terms and simplify
(3x+8x)+(9+12)
11x+21
Second one: 2x + 6+x² + 6x + 9
Collect like terms and simplify

8x+15+
Hope this helps you, have a BLESSED and wonderful day, as well as a safe one!
-Cutiepatutie ☺❀❤
5% = 5/100 = 1/20;
12% = 12/100 = 3/25;
15% = 15/100 = 3/20;
...............................
Answer:
As a mixed number, 8/3 is equal to 2-2/3.
Step-by-step explanation:
Answer:
i think question is not clear