to have an infinite number of solutions, the equations have to be the same...or equivalent.
-5(x + 2) + 3x =
-5x - 10 + 3x =
-2x - 10 =
-2(x + 5) ....so ur original equation can be broken down to this...
so -5(x + 2) + 3x = -2(x + 5) would produce infinite solutions because it is basically the same expression <=