Please help ASAP. 40 PTS

c  80

Step-by-step explanation:

The sum of the opposite interior angles is equal to the exterior angle

x +65 = 3x-5

Subtract x from each side

x-x+65 = 3x-x-5

65 = 2x-5

Add 5 to each side

65+5= 2x-5+5

70 = 2x

Divide each side by 2

70/2 =2x/2

35=x

The sum of the angles of a triangle add to 180

x+65+b = 180

35+65+b = 180

100 +b = 180

Subtract 100 from each side

100-100+b =180-b

b = 80

27 + 13x + 15 = (x + 5)( =

step-by-step explanation:

27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( =

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.