Question

Find the value of X.

Answer 1

x=110 i think

Explanation:

x+20+2x-70+x+x+20+x+90

=6x+60

6x+60=720

6x=(720-60)

6x=660

660/6=110

x=110

hope this helps!

Answer 2

Explanation:

sum of all angles of polygon = (n-2)*180 {n is no of sides}

= (6-2)*180 = 4*180 = 720

90 + 2x-70 + x+20 +x + x+20 + x = 720

Bring like terms together

90 - 70 + 20 + 20 + 2x + x + x + x + x =720

60 + 6x = 720

6x = 720 - 60

6x = 660

x = 660/6

x = 110