I dont understand can you please break it down

Answer:
x=12 (although you can't see it)
Step-by-step explanation:
the equation is 5x +15= 75. We need to take the 15 out. + oppisite is -
5x + 15 = 75
15 - 75 = 60
rewrite.
5x =60
Need to take the 5 out. muliplications oppisite is division.
5 divided by 60 =12
Hope this helped! Please mark as brainliest! Thanks!
I can solve the others too. just tell me them.