Question

Find the value of x. m∠AOC=7x−2,m∠DOC=3x+5,m∠EOD=22

Answer 1

x = 15.5

Explanation:

The three angles add to a straight line

∠AOC+<DOC+∠EOD=180

7x-2 + 3x+5 +22 = 180

Combine like terms

10x +25 = 180

Subtract 25 from each side

10x+25-25 = 180-25

10x = 155

Divide each side by 10

10x/10 = 155/10

x = 15.5