5,4*x*0,2+4,6*x*0,2=18
5,4x*0,2 + 4,6x*0,2 = 18 1,08x + 0,92x = 18 2x = 18 x = 18/2 x = 9
5,4x*0,2+4,6x*0,2=18 1,08x+0,92x=18 2x=18 x=9