Question

How to do it geometry

Answer 1

x = 15 and

the 3 angles are 45, 60 and 75 degrees.

Explanation:

The 3 angles of any triangle add up to 180 degrees, so:

3x + 4x + 5x = 180

12x = 180

x = 15.

Angles:

3*15 = 45

4*15 = 60

and

5*15 = 75.

Answer 2

Hey Im not sure I understand the question but I think the answer is

x=15

Explanation:

5x+ 3x+ 4x= 180,( I made it equal to 180 because that is the measure of angles for triangles)

add the x

12x= 180

divide

180/12

x=15

(EXTRA)

To prove it you can plug 15 into any of the x's to add it up and it will equal 180