Posted by rany on Thursday, March 19, 2009 at 1:41pm.
question: slove by comparison and check your solution?
a)2x4y5=0
3x+8y4=0
my work so far:
2x4y=5(1)
3x+8y=4(2)
_____________
6x12y=15(3) (3)(4)
6x+16y=8(4)
____________________
28y/28 = 7/28
y= .25
2x4(.25)=5
2x1+5
2x/2 + 6/2
x = 3
ya i was wrong when i did my check, both sides werent equal, and i cant figure out why i was wrong in my work.PLEASE HELP!!!!!

grade 9 math slope equations  bobpursley, Thursday, March 19, 2009 at 3:02pm
you subtraced the equations wrong.
You should have gotten
6x12y=15(3) (3)(4)
6x+16y=8(4)
____________________
28y = 7
which leads to y=1/4

grade 9 math slope equations  rany, Thursday, March 19, 2009 at 3:05pm
but i divided both sides by 28 though

grade 9 math slope equations  rany, Thursday, March 19, 2009 at 3:09pm
i did that and i got the same thing as before though?

grade 9 math slope equations  Suck it, Thursday, February 3, 2011 at 5:38pm
cool .....not
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