Resuelva cada sistema de ecuaciones lineales por el método de reducción {0,07a- 0,03b= 12 0,01a +0.03b = 12

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

In angle pqr find the measure of

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*