Question

4. Find the value of x.
(4x - 10)

Answer 1

x = 20°

Explanation:

We know,

The angle of a straight line is 180°

therefore,

• 90 + (4x - 10) + x = 180°
• 5x = 180 - 90 + 10
• 5x = 190 - 90
• 5x = 100
• x = 20°

Hope it helps !!