What is the value of x?

Answer: x = 70
Step-by-step explanation:
We are looking at the supplementary angles so 180-45 = 2x -5
135 = 2x-5 add 5 to both sides
135+5 = 2x
140 = 2x Divide both sides by 2
70=x
Check: 2(70)- 5 = 135
135 + 45= 180
OK!