0,4x+2×0,45×0,16x+6=x
4х+2*0.45*0.16Х+=Х 4Х+0.144Х+6=Х 4.144Х+6=Х 4.144Х-Х=-6 3.144Х=-6 х=-6÷3.144 х=-6÷3144/1000 х=-6×1000/3144 х=6×125/393 х=-2×125/131 х=-250/131