Answer:
2 = 65
1= 115
Step-by-step explanation:
angles 2 and 65° are equal
so input that in for 2
then subtract it by 180°
4(2x+10)= 0
8x+40=0
subtract 40 from both sides
8x+40-40=0-40
8x=-40
x=-40/8
x=-5
4(2x-10)=0
8x-40=0
Add 40 from both sides
8x-40+40=0+40
8x=40
x=40/8
x=5
(-1)+(-6)= -7
-7 + 6 = -1
therefore, the answer is 6.