4х-5,5=5х-3(2х-1,5) 4-5(3х+2,5)=3х+9,5 5(2+1,5х)-0,5х=24 3(0,5х-4)+8,5х=18
1. 4x-5.5=5x-6x-4.5 4x-5x+6x=-4.5+5.5 5x=1 x=0.2