Answer:
A.(1,2)
Step-by-step explanation:
Step: Substitute
−2
/3
y + 7
/3
4x−12y=−20:
4x−12y=−20
4(
−2
/3
y + 7
/3
)−12y=−20
-44/3y + 28
/3
=−20(Simplify both sides of the equation)
−44
/3
y + 28
/3 + −28
/3 =−20+ −28
/3
(Add (-28)/3 to both sides)
−44
/3
y= −88
/3
−44
/3
y
−44
/3
= −88
/3 −44
/3
(Divide both sides by (-44)/3)
y=2
Step: Substitute2foryinx=
−2
/3
y+
7
/3
:
x=
−2
/3
y+
7
/3
x=
−2
/3
(2)+
7
/3
x=1(Simplify both sides of the equation)
Answer:
x=1 and y=2
