Answer:
22°
Step-by-step explanation:
[tex](x + 16) \degree + x \degree + 120 \degree = 180 \degree \\ \\ \therefore \: 2x \degree + 136 \degree = 180 \degree \\ \\ \therefore \: 2x \degree = 180 \degree - 136 \degree \\ \\ \therefore \: 2x \degree =44\degree \\ \\ \therefore \: x = \frac{44}{2} \\ \\ \therefore \: x = 22 \degree \\ \\ \huge \red{ \boxed{\therefore m\angle \: B = 22 \degree}} \\ [/tex]
