You can use
GeoGebra to solve systems of equations.
GeoGebra Instruction 1
Enter to start a new row for each of your equations.
Shift key, click the box of the first equation and then click the box with the row number of the last equation.
If you get as the output, the system of equations has no solution. If
GeoGebra returns one of the variables as a function, the system of equations has infinitely many solutions.
GeoGebra Instruction 2
Algebra View and
Graphics View under
Enter to start a new row for each.
Intersect . If you can’t find the button, check that you have the
Graphics View by clicking on any empty space inside the
Graphics View window. Then find the button under the
Point tool list.
Graphics View. The order does not matter.
Algebra View as coordinates of the intersection points.