Answer:
132°
Step-by-step explanation:
Assuming $x, ~x, ~x-2, ~x-2, ~x + 2, ~x + 2$ and $x + 4$ is x, x, x - 2, x - 2, x + 2, x + 2, and x + 4
Sum of interior angles in a heptagon: 900°
x + x + x − 2 + x − 2 + x + 2 + x + 2 + x + 4 = 900°
7x + 4 = 900
7x = 896°
x = 896° / 7 = 128°
Largest angle = x + 4 → 128° + 4 = 132°