if your trying to find the slope then the slope is 3
First lets subract 1.2 from each side to get
2.3x+2.5x=8-4.3x
Then Combine like terms to get
4.8x+8-4.3x
Then add 4.3 to each side
9.1x=8
x equals about 0.88
Do you have question choices if not then I'll try I guess......
-27+9-3+1
36-3+1
3