At a hardware store, a tool set normally costs $80. during a sale this week, the tool set costs $12 less than usual. what percentage of the usual price is the saving? explain or show your reasoning.

The first and second steps to solve the equation 3x/5 + 5 = 20.are shown below 3x/5 + 5 - 5 = 20 - 5 3x/5 (5/3) = 15 (5/3)a.addition property of equality b.subtraction property of equalityc.multiplication property of equalityd.division property of equality