I am assuming theres an addition sign between the 3 and 4.
So basically you want to multiply the 5x by both terms so it will end up being
(5x•3) + (5x•4)
Now simplify:
15x+20x
Hope this helped ^_^
Answer:
It is the same-side interior angle of B which is the vertical angle of 100 (?)
Step-by-step explanation:
Not sure but I think it’s B