if (x-25 degree) and (x+15 degree) are a pair of linear angles,find the magnitude of each of them.

linear pair always have sum of 180, so 
(x- 25) + (x +15) = 180
x - 25 + x + 15 =180
2x -25 + 15 = 180
2x = 180 + 25 - 15
2x = 190
x = 190/2
x = 95
two angles are = 95 -25 = 70 :    95 + 15 = 110
hope it helps!!!