129 degrees is the correct answer for the missing angle number 1 :)
-43
-44
-45.
-43 + -45 is -88
Answer:
x+y=-8
Step-by-step explanation:
y-x=4
x=3y
y-3y=4
x=3y
-2y=4
x=3y
y=4/(-2)
x=3y
y=-2
x=3*(-2)
x=-6, y=-2 then
x+y=-6-2=-8
11 = w - 12
11 + 12 = w -12 + 12
w = 11 + 12
w = 23