<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em>⤴</em>
<em>Hope</em><em> </em><em>this</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em>
Hi,
Because the angles are equal (38) and both are right triangles, it is assumed that 3x=12. Now you simply divide and get 4.
<h3>hello!</h3>
==========================================================
Let's simplify the expression:-
Multiply 3 times 1 and 1 times 2:-
======================================================
<h3>note:-</h3>
Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)