Use inverse operations to solve the following: 4.9 + z = -9

As soon as look at the parallelogram abcd shown below: the table below shows the steps to prove that if the quadrilateral abcd is a parallelogram, then its opposite sides are congruent: which choice completes the missing information for reason 5 in the chart? (6 points) congruent parallelograms congruent triangles similar angles similar triangles

Iwill make brain if you me correctly fill this out needs due today pls and send it back to me (click the link and you will get it)

Solve: 3x+y=6 4x-2y=18 show all work !