remember you can do antying to an equaitn as long as you do it to both sides
treat as equaiton, but flip sign when dividng or muliplying by negaitve
isolate x
first distribute
7+3x<8(3+x)
7+3x<24+8x
minus 3x both sides
7<24+5x
minus 24 both sides
-17<5x
divide both sides by 5
-17/5<x