Question

Two adjacent angles of a parallelogram are (5x − 28) ° and (2x + 68) °. Find the value of x.

Answer 1

sum if adjacent angles is 180⁰

5x-28+2x+68=180

7x-40=180

7x=180+40

7x=220

x=220/7

Answer 2

Answer:

parallelogram the opposite angles are egual.Therefore 5x-8=5 (30)-8=150-8=142 2x-82=2 (30)+82=60+82=142.

so all the angles of a parallelogram are 142, 38, 142, 38