Question

The three angles below are supplementary. Use the Angle Addition Postulate to solve for X.

Answer 1

Answer:

5x+4+x-2+3x+7=9x+9=180,x+1=20,x=19

Step-by-step explanation:

Answer 2

Answer:

x = 19

Step-by-step explanation:

The 3 angles are supplementary and sum to 180°

Sum the 3 angles and equate to 180

5x + 4 + x - 2 + 3x + 7 = 180 , that is

9x + 9 = 180 ( subtract 9 from both sides )

9x = 171 ( divide both sides by 9 )

x = 19