Question

please tell step by step in easy way​

Answer 1

Answer:

D) 60°

Step-by-step explanation:

7y+5y = 180° ( Straight line)

12y=180°

y= 180/12 = 15°

The angles in the triangle are :

3y= 3×15=45°

5y= 5×15= 75°

The sum of three angles in a triangle is 180°

45°+75°+x=180°

120°+x=180°

x=180-120=60°