I could only do b
3(2x + 4) = 2+6x+10
6x+12 = 2+6x+10
6x- 6x = 2+10-12
0x/0 = 0/0
x = 0
I think
<span>Hope that helps.Have a nice day!! ^^</span>
Answer:

Step-by-step explanation:
First we will find sum of 
Adding the like terms:

Now subtract (-9x^2+8x-14) from (-6x^2 - 7x +7)

Answer:
Step-by-step explanation:
0.995880943 i