1,-2 and -5x + 3y = 9
whats the new equation

Example:
y=mx+b is the slope intercept form where m is the slope and b is the y intercept 
so get y on one aside and everything else on the other by subtracting and dividing.
2x+3y=9
3y=-2x+9
y=-2x/3+9/3
y=-2/3*x+3    3x-x+2=4 so the equation to the example is 4
 

59/96 is the ratio hope this not 100% sure though : /