Answer:
54
Step-by-step explanation:
18(3) = 18+18+18 = 54
But remember that we have two negatives
When you multiply two negative numbers, they become positive, therefore your answer is 54
x = 60 degrees
we know x+(2x)=180
so, then we get 3x=180
x = 180/3
x = 60
279.06
x= 2/3
me and my teacher say yes