Question

What’s the answer to this if u know this!! APPREICATED heavily!

Answer 1

Step-by-step explanation:

75° and (3x + 15)° are supplementary (add up to 180°).

Therefore 75 + 3x + 15 = 180, 3x = 90 and x = 30.

Answer 2

Answer:

x = 30

Step-by-step explanation:

3x + 15 and 75 are adjacent angles and are supplementary, then

3x + 15 + 75 = 180

3x + 90 = 180 ( subtract 90 from both sides )

3x = 90 ( divide both sides by 3 )

x = 30