Googolplexian.
EXPLANATION
Many people mistakenly consider Googolplex as the largest, but it is only the second one with a name. Googolplex is a "1" followed by a googol of zeros.
Googolplexian, on the other hand, is the worlds largest number with a name. It is a "1" followed by a googolplex of zeros.
You would first subtract 2 and 15 from both sides so you'll get -(3x+5)= -9 and then the negative would go into the 3 and 5 so it would be -3x-5 = -9 and then you'll add 5 to both sides then divide -3 to both sides so you'll get

but since 2 negative make a positive your final answer is
Answer:
The giant numbers painted on the airport runways stand for the airport's name and are called a heading. The runway heading consists of two numbers between 1 and 36. This means the heading is based on the compass directions with 360 representing north, 90 – east, 180 – south, and 270 – west.
A taxiway is a path for aircraft at an airport connecting runways with aprons, hangars, terminals and other facilities. They mostly have a hard surface such as asphalt or concrete, although smaller general aviation airports sometimes use gravel or grass.Taxiways can be a combination of letters and numbers, or letters alone. They are indicated on a black sign with yellow letters or a yellow sign with black letters and arrows. A black square with yellow letters and/or numbers inside signifies the plane's position on the various taxiways.
Explanation: