Question

http://answers.yahoo.com/question/index?qid=20130701150525AAtHbDI

Answer 1

@dan815

Answer 2

-21x-3y=-24
y=-7x+7

Answer 3

these 2 equations are independant of each other if they are not the same equation

Answer 4

lets say i arrange the 2nd equation in terms in general form like the first one

Answer 5

-21x-3y=-24
y=-7x+7 ---- > 7x+y=7

Answer 6

can you see it yet?

Answer 7

if i multiply the 2nd equation by -3
i will get the same equation as first equation
there is no way to eliminate a variable, these 2 only count as 1 equation

Answer 8

-21x-3y=-24
y=-7x+7 ---- > (7x+y=7)*-3 --->-21x-3y=-24