① 5x+54<x-1 ② 2(1 3x)<3x+20 ③ 2(13+x)<3(x+2)④(x+5)<3(x-5)-6 해 부등식

① 5x+54<x-1 ② 2(1 3x)<3x+20 ③ 2(13+x)<3(x+2)④(x+5)<3(x-5)-6 해 부등식

1、4x-55/4
2.2-6x>3x+20
-18>9x
x