Question

find the value of x​

Answer 1

Answer:

x=-9

Step-by-step explanation:

Ang MST + Ang STO = 180 (co-interior angles)

=> x+109+x+89 = 180

=> 2x+198 = 189

=> 2x = -18

=> x = -9

Ang MST= x+109 = -9+109= 100

Ang STO= x+89 = -9+89= 80