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30 votes
30 votes
4x - 8y = -4
-2x + 8y = -2
Solve by elimination

User Vinayak Shedgeri
by
2.9k points

1 Answer

9 votes
9 votes

Answer:

X=1 Y=0

Explanation:

Multiply the second equation (-2x + 8y = -2) by 2 in order to get -4x+16y=-4.
Using this equation, you can eliminate the x

4x - 8y = -4
-4x+16y=-4.
=
8y=0
y = 0

Now, knowing that y=0, plug y into the second equation:

-2x+8(0)=-2
simplify
-2x=-2
lastly, divide both sides by -2
x=1

User Tim Lloyd
by
2.6k points