Answer: x=8
Explanation:
Given:
<A = 69
<B = 5x + 2
<C = 9y - 3
Rules to know:
>Those 2 lines on AB and BC means that the 2 sides are equal. That also means that the 2 angles that correspond to those sides are equal.
So <A=<C
>All angles of a triangle add up to 180
Solution:
<A = <C >substitute
69 = <C > You do not need to solve for y because <A=<C
>All angles of a triangle add up to 180
<A + <B + <C = 180
69 + <B + 69 = 180
138 + <B = 180
<B = 42
Substitute back in:
<B = 5x +2
42 = 5x + 2
40 = 5x
x = 8