To solve for the value of y, all you have to do is add up all the expressions and values together and make it equal to 180 degrees.
Y + (Y - 12) + 56 = 180
2Y - 12 + 56 = 180
2Y + 44 = 180
Y = 68 degrees.
120 is the answer I’m not first but that’s alright
Theoretically, you should be able to travel 396 miles on a full tank of gas. I found this by multiplying 22 and 18 because you can get 22 miles for every single gallon, and you have 18 gallons.