Question

What is the answer to the question

Answer 1

Hello!

As you can see, the angle is a straight angle, which measures 180°. One angle measures 80°.

180 - 80 = 100

 That means the rest added all together measure 100°.

3x + 2x = 5x

5x = 100

Divide both sides by 5

$\frac{5x}{5} = \frac{100}{5}$

$\framebox{x = 20 \°}$

Answer 2

$3x+2x+80=180\\ 5x=100\\ x=20$