Question 164199
1.{{{-4x + 3y = 5}}}
2.{{{12x - 9y = -15}}}
Multiply eq. 1 by 3 and add to eq. 2,
{{{3(-4x+3y)+(12x-9y)=15+(-15)}}}
{{{-12x+9y+12x-9y=0}}}
{{{0=0}}}
That's true. 
Eq. 1 and 2 are dependent. 
They are the same equation and have infintely many solutions.