Help? And please show me how you did it.

Abcd is a parallelogram find the valuse of x

(mc 02.03) what set of reflections and rotations would carry rectangle abcd onto itself? reflect over the y-axis, reflect over the x-axis, rotate 180° rotate 180°, reflect over the x-axis, reflect over the line y=x reflect over the x-axis, rotate 180°, reflect over the x-axis rotate 180, reflect over the y-axis, reflect over the line y=x

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !