Asked by Komal yaseen

5x-4y=10
2x+8y=4
Answered by Steve
rewrite #1 and you get

10x-8y=20
2x+8y=4

Now add the two equations and y goes away. Solve for x, then get y.
Answered by Komal yaseen
Thanks Steve.
Answered by Komal yaseen
But how???
Answered by Komal yaseen
Please explain it.
Answered by Steve
If you add the two equations, you get

12x = 24

because -8y+8y = 0

Now you know x=2, so y=0
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