Answer:
i think x = 17
Step-by-step explanation:
(2x-4)+(3x+20)+(5x-6) = 180°
10x+10 = 180
10x = 180-10
10x = 170
x = 170/10
x = 17
x = -4
hope this helps you
sorry it won't let me show step by step but your answer is 150x-17
umm i can help but what's the lessons name or anything that can show how the question looks
