The equation 3x−5y=15+3x has
infinite solutions
Given equation is
3x−5y=15+3x
−5y=15
y=−15/5
y=−3
This represents a line parallel to X-axis cutting Y-axis at (0,-3)
So, the number of solutions are infinite.
Also, when you compare it with ax+by+c=0 ⇒a=0,b=1,c=3
and we know that the linear equation in two variable has infinte number of solutions.