A line passes through the points (-3,-5) and (6,1). The equation of this line can be written in the form Ax+By=C , where A, B,and C are integers with greatest common divisor 1, and A is positive. Find A+B+C.
The line is 7x - 2y = -1, so A + B + C = 7 + (-2) +(-1) = 4.
