Answer:
y=4 x=7
Step-by-step explanation:
5y-4=y+12
+4 +4
5y=y+16
-y -y
4y=16
4y÷4=16÷4
y=4
(4)+12=16
3x-5=16
+5 +5
3x=21
3x÷3=21÷3
x=7
