Question

The angles of a triangle are 2x, 3x, and 4x degrees. Find the value of x.

Answer 1

$2x+3x+4x=180$ would be the equation

You could refine it to make $9x=180$

Divide both sides by 9  $9x/9=180/9$

This gives you $x=20$

Hope this helps!
;)