Question

What is the value x?

9.5


10.5


7


12

Answer 1

48

Explanation:

angles on a straight line add up to 180⁰

therefore (10x-20)⁰+(6x+8)⁰=180°

grouping like terms

10x-6x=180-8+20

4x=192

dividing both sides by 4

x=48

Answer 2

12

Explanation:

10x-20+6x+8=180 [Straight angle]

16x=180+12

16x=192

x=192/16

x=12