Respuesta :

scuz01
Combine 15x and 7x to get 22x. Then combine 10 and -6 to get 4. Subtract 4 from 180 then you get 176. Divide 22x from 176 to get x=8
Squidsword
the angles are supplementary, meaning they add up to 180 degrees. so add the equations to get

22x + 4 = 180

subtract 4 to both sides

22x = 176

divide 22 to both sides

x = 8

if you also want to know the angle measurements, plug x into their respective equations.