Okay, so,
5x < -3x + 8
(NOTE: The less than or equal to sign is represented as a less than sign since I am typing on a phone :P)
You can add three to both sides to even out the expression like so:
8x < 8
Now just divide both sides by 8, like so:
x < 1
And just like that, you have simplified it!
(NOTE (again lol) The less than or equal to sign is represented as a less than sign since I am typing on a phone :P)
Hope this helps!