pls help if you answer correctly i will give you brainliest and i will give a reward of a lot of points you just have to check back at my response

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

What is the lcm of 16 and 40 ? 24 and 40 ?

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.