Step-by-step explanation:
what should you do ? find x ?
both angles are complementary on one side of a straight line.
the sum of all angles around 1 point on one side of a line is airways 180 degrees.
so,
5x + 10 + 2x - 5 = 180
7x + 5 = 180
7x = 175
x = 25
therefore,
5x + 10 = 5×25 + 10 = 135 degrees
2x - 5 = 2×25 -5 = 45 degrees
