Enter the number that belongs in
the green box.
6x-7X4x + 7
20x + 5
x= [ ? ]

x = 7°

Step-by-step explanation:

From the diagram, it is a refraction angle. When two lines are intersected each other, a refraction angles is created. Each line is a straight angle or 180°. In the above diagram,

6x - 7 + 20x + 5 = 180°

or, 26x - 2 = 180°

or, 26x - 2 + 2 = 180° + 2° [Adding 2° in both sides]

or, 26x = 182°

or x = 182° ÷ 26

Therefore, x = 7°

If we use x = 7°, we can find that each line is equal to 180°.