-4 as if it was -1/4 that would mean it goes to right 4 times and down 1
I reccomend that you add an image or better explain what you want us to do.
X - the number
3(x+1)=2x+4
3x+3=2x+4
3x-2x=4-3
x=1
The answer is 66 kilometers.
Start with the given expression: 12g where 'g' standts for the liters of gasoline.
Input your data and solve: 12 * 5.5 = 66