Question

Please tell briefly
how x+ x + x/2 = 4x ​

Answer 1

Angles of triangle=(x-40) , (9x-20) , (x/2-10)

Therefore.  x-40+x-20+x/2-10=180

2x+x/2-70=180

4x/2+x/2=180+70

5x/2=250

5x=250*2

5x=500

x=100

Therefore x-40=100-40=60

x-20=100-20=80

x/2-10=100/2-10=50-10=40

Therefore the angles of the triangle are as follows:

60 , 40 , 80

Answer 2

1st angle is 60

2nd angle is 80

3rd angle is 40