math help urgent
what di di do wrong in this???
the question is: x8y=18
16x+16y=8
i did :
first multiplied the first equation with 2
then
2x16y=36
16+16y=8

14x=28
x=28/14
x=2
now
x8y=18
(2)8y=18
8y=18+2
8y=20
y=20/8
y= 2.5
plz help me what did i do wrong??
asked by
Anonymous

I can't see anything besides that y=2.5 because you divide by a negitive
posted by Sally

oo....ok thanks sally
posted by Anonymous
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x8y=18 16x+16y=8