Answer:
71°
Step-by-step explanation:
The equation should be 19+90+x=180
Step 1: Add 19+90=109
Step 2: Subtract 180-109=71
So, you're answer is 71°
-90/11
convert each mixed number into a improper fraction
27/11 - 117/11
= -90/11
it's 60 degree in my thinking
hope this is the answer
