Question

the angle of triangle are (x-40)° , (x-20)° and (1/2x -10)° find the value of x.
​

Answer 1

Step-by-step explanation:

by ,the sum of all angles of triangle

= (x+40) + (x-20) + (1/2x-20)=180

= x+40 + x-20 + 1/2x-20 = 180

=(x+x+x/2) - (40+20+20) =180

= (x+x+x/2) -80=180

= 5x/2 = 180+80

= 5x/2=250

= 5x= 250*2

= 5x = 500

= x=500/5

=x = 100

Answer 2

Step-by-step explanation:

Hope you get it.

Please mark as Brainliest.