Option 25 DHS 1.2

4 ready-made solutions (problems solved in detail and clearly)
DHS - 1.2
№ 1. Check the compatibility of the system of equations and, if compatible, solve it:
a) according to the Kramer formula; b) using the inverse matrix; c) by the Gauss method.
№ 2. Check the compatibility of the system of equations and, if compatible, solve it:
a) according to the Kramer formula; b) using the inverse matrix; c) by the Gauss method.