Answer:
106.70 because you have to subtract 14.99 by 9.99 which is 106.00 and then add that to 70 and your answer is 106.70. by the way I am a kid and a fifth grader.
It’s b here is proof of what i got
You just have to combine like terms 4x+5x +12 -
1 = 9x+11 I am not sure if it is 12x or just 12 if it is 12x the answer is 21x-1
Answer: (-3, -21)
I'm not sure if that's what you wanted, sorry.