8X+5Y=23
8X=23-5Y
-8X+9Y= -19 multiple all by -1
8X-9Y=19
8x=23-5y
Plug that in
23-5Y-9Y=19
-14Y=19-23
-14Y= -4
Y=1
8X=23-5Y
8X=23-5•1
8X=23-5
8X=18
X=18/8
X=9/4
Step-by-step explanation:
n/3+10=16
n/3=16-10
n/3=6
n=6/3
n=2
Answer:
D.)
Step-by-step explanation:
multiply every side by 5 since it's a square each side is equal!