Answer:
x= 8, y= -4
Step-by-step explanation:
You can subtract one equation by another to eliminate x
(x-y)-(x+7y)=12-(-20)
-8y = 32
y= -4
Substitute y = -4 in the first equation:
x-(-4) = 12
x =8
x=16, y=-4
-1(x-y=12)
x+7y=-20
-x+y=-12
8y=-32
y=-4
x-4=12
x=16
Hope this is what you are looking for! :)
76%
Do turn decimals into percentages you just gotta multiply by 100.
0.76×100=76
~
237 seats are empty
I don't remember it much, but i'm pretty sure it's:
1. SSS
2. SAS
