a)x-6.2>8⇒x>8-6.2⇒x>1.8
b)x+3×2.24<12⇒x+6.72<12⇒x<6.72-12⇒x<-5.28
c)4x>19.2=⇒x>19.2/4⇒x>4.8
d)x-3.6>3.4⇒x>3.4+3.6⇒x>7
e)1.6×x<9.6⇒1.6x<9.6⇒x<9.6/1.6⇒x<6
f)x:1.05>9.6⇒x>9.6×1.05⇒x>10.08
g)3x+8.64<27.6⇒3x<27.6-8.64⇒3x<18.96⇒x<18.96/3⇒x<6.32
h)4x+5.4<21.4⇒4x<21.4-5.4⇒4x<16⇒x<16/4⇒x<4
sucees