Answer:
x = 144
Step-by-step explanation:
Angle sum of heptagon = 900
5x + 90 + 90 = 900
5x + 180 = 900
5x + 180 - 180= 900 - 180
5x = 720
Divide both sides by 5
x = 144
1 third is in 2/9 because when simplified 2/9 becomes 1/3 being 1 third in 2/9
The answer is 10 :) ........
X both sides by 11
=6x+2=-22
-2 from both sides
=6x=-24
both sides /6
=x=-3
Y because if you add them you will get 10x =-10
The y will be eliminated because you have positive 3 -4
