3. no, the diagonals of a parallelogram donor intersect at 90 degree ( are not perpendicular) .it is because the adjacent sides of parallelogram are not equal..
The first thing you do is subtract 2 from both sides to move the 2 to the left side 3-6x=7x now add 6x to both sides to move -6x to the right 3=13x divide by 13 to eliminate the 13 on the right side 3/13
