Answer:
x = 5
Step-by-step explanation:
73 + 6x + 4 + 8y - 7 = 180
this is an isosceles triangle so the measure of both legs is equal:
8y - 7 = 73 add 7 to both sides
8y = 80 divide both sides by 8
y = 10
The sum of interior angles in a triangle is equal to 180.
73 + 73 + 6x + 4 = 180 add like terms
150 + 6x = 180 subtract 150 from both sides
6x = 30 divide both sides by 6
x = 5
