Answer:
you add up all the angles you know then 360- what all of them are when added together and that is your answer.
Answer:
Step-by-step explanation:
Answer:
Yes they're both correct :)!
The answer would be the top right device.
Ax+by=c
y=x+3
subtract x from both sides
Y-x=x-x+3
Y-x=3
-1•(y-x)=-1•3
-y+x=-3
Reorder:
X-y=-3
I’m not sure if it’s 100% correct but that’s all I can do