Answer:
1) x=14, y=7
2) x=2, y=7
3) SAS (Side-Angle-Side)
Step-by-step explanation:
1) x-4=y+3
x=2y
substitute
2y-4=y+3
2y-y=3+4
y=7
x-4=7+3
x=10+4
x=14
ANSWER = x=14, y=7
2) y+5=2y-x
y+x=x+7
From the second equation, we can immediately see that y=7, so
7+5=2(7)-x
12=14-x
x=14-12
x=2
ANSWER = x=2, y=7
