ABCD is a parallelogram, find the x only.
(A) 10
(B) 15
(C) 20
(D) 35
![ABCD is a parallelogram find the x only A 10 B 15 C 20 D 35 class=](https://us-static.z-dn.net/files/d8f/4da87284af770fab29d454a0ce228d38.png)
Answer: C
Step-by-step explanation:
Opposite angles of a parallelogram are congruent, so:
3x+15 = 2x+35
x+15=35
x=20