Решите уравнение: 2/3 x + 4/9 x =3,2
2/3х+4/9х=3,2 6/9х+4/9х=3,2 10/9х=3,2 1ц.1/9х=3,2 х=3,2:1ц.1/9 х=32/100:10/9 х=100/32:10/9 х=100/16:5/9 х=500/454 х=250/227 х=1ц.23/227