Question

I need to know how to solve this step by step

Answer 1

15x + 5y = 5

3x + y = 1

`15x + 5y = 5 \\ </p><p>3x + y = 1 \\ \\ 15x + 5y = 5 \\ - 5(3x + y = 1) \\ \\ 15x+5y=5 \\ - 15x - 5y = - 5\\ - - - - - - - - \\0 + 0 = 0 \\ \\`

this has an infinite number of solution. (0 = 0)

in graph, this is an overlapping lines