Hey guys, I could really use your help. Lots of points and for a good answer.
I just need to determine if these arguments are valid or invalid reasoning.

Valid or Invalid? Women are the main breadwinners in two-thirds of families across the country.
Valid or Invalid? Employers pay different workers different salaries based on skill level.
Valid or Invalid? Paying people different salaries for the same work is discrimination.
Valid or Invalid? Pay discrimination hurts middle class families.
Valid or Invalid? Women are ready to fight back against pay discrimination.
It would also be really helpful if you could explain why, im a bit confused as to the definition of invalid reasoning.
Thanks!