Question

Please help me with this

Answer 1

12

Explanation:

The sum of three angles is 180°

(3x + 1) + (3x-2) + (10x -11) = 180°

16x -12 = 180

16x = 192

x = 12

Answer 2

12

Explanation:

10x-11+3x-2+3x+1=180

16x-12=180

16x=192

x=12