решить уравнения
1: 6×x =28-x
2: 9x26=30×5x
3: 7-3x=6x-56
4: 0,9x-7,4=-0,4x+4,3

1.6*X=28-X6X+X=287X=28X=28:7X=42.9*26=30*5X234=150XX=234:150X=1.563.7-3X=6X-566X-3X=-56-73X=-63X=-63:3X=-214. 0.9X-7.4=-0.4X+4.30.9X+0.4X=4.3+7.41.3X=11.7X=11.7:1.3X=9