Answer:

Step-by-step explanation:
Property used: <em>An exterior angle of a triangle is equal to the sum of the opposite interior angles.</em>

Answer:
-48
Step-by-step explanation:
Multiply both sides of the equation by -8
-8(6) =
(-8)
-48 = w
Answer:
divide perimeter by 3
Step-by-step explanation:
all 3 sides of an equilateral triange are equal, so you can divide the perimeter by 3 to get the length of one side
W + 3 3/8 = 1 5/6;
W = 1 5/6 - 3 3/8;
W = 11/6 - 27/8;
W = 11/(2*3) - 27/(2*4);
W = (11*4 - 27*3)/(2*3*4);
W = (44 - 81)/24;
W = -37/24 = -1 13/24;