Question

Solve for x in the diagram below

Answer 1

x=20

Explanation:

You make an equation (4x+100=180) and solve

4x=80---> x=20

Answer 2

x = 20

Explanation:

all of these together will come out to equal 180 degrees. Because it is a straight line. every straight lines is 180 degrees.

x + 3x + 100 = 180

simplify, 4x + 100 = 180

subtract 100 from both sides, 4x = 80

divide both sides by 4, x = 20