Question

Can anybody help me solve this? You must solve for x first.

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Answer 1

Answer: The measure of angle ABC is 65 degrees.

Explanation:

2x- 15 + 2x - 15 + x + x =360

6x - 30 = 360

+ 30 + 30

6x = 390

x= 65

check: 2(65) - 15 = 115

115 + 115 + 65 + 65 = 360

Answer 2

ABC = 65

Explanation:

The sum of the angles of a quadrilateral are 360

2x-15 + x + 2x-15 +x = 360

Combine like terms

6x -30 = 360

Add 30 to each side

6x -30 +30 = 360+30

6x= 390

Divide by 6

6x/6 = 390/6

x=65

We want angle ABC

ABC = x

ABC = 65