Answer:
see below
Step-by-step explanation:
The three sides add to 51
n + 4n-4 + 4n-8 = 51
9n -12 = 51
9n = 63
n = 7 4n-4 = 24 4n-8 = 20
1. x= -1/3 or x= 5/2
2. x=3/4 or x=1
Let w the unknown number. Then, you have
true