Because 16/5 and 48/15 are equivalent fractions
If it’s a triangle then it has to equal 180
so 48+54+x=180
48+54=102
180-102=x
x=78
The answer to your question is X= 11
If one move is 325 and there's 3 moves you have to multiply them together to get 975 but since the submarine is going down its a negative integer so the answer would be -975