Answer: x=4 and y=−8
Step-by-step explanation: 7x+2y=12, −3x−2y=4
7x+2y+−2y=12+−2y
7x
/7
=
−2y+12
/7
x=
−2
/7
y+
12
/7
−3(
−2
/7
y+
12
/7
)−2y=4
−8
/7
y+
−36
/7
+
36
/7
=4+
36
/7
−8
/7
y
/
/−8/7
=
64
/7
/−8
/7
y=−8
x=
−2
/7
y+
12
/7
x=
−2
/7
(−8)+
12
/7
x=4
x=4 and y=−8
