Find the equation of straight line passing through (2,-3) and sum of intercepts on coordinate axes is 5.

given that

a+b=5

x/a+y/b=1 passes through (2,-3)

put x=2 and y=-3 and b=5-a

so you will get the value of a

then find out the value of b (b=5-a)

then subtitute them in the eq x/a+y/b=1