6a+18 should be your answer
Answer:
-29
Step-by-step explanation:
Remove the brackets: -20 - 9
= -29
The sum of the interior angels is 180(n-2). In this case 180(5-2)= 540. So the equation is 540=100+103+4x+(3x+3)+(5x-2). Then solve for x. X=28
150
30 degrees away from 180 and
60 degrees away from 90
