46:7=6 ост 4 (6*7+4)
63:12=5 ост 3 (12*5+3)
77:23=3 ост 8 (23*3+8)
12,48:(104х-1,56)-0,6=9,4
12,48:(104х-1,56)=9,4+0,6
104х-1,56=12,48:10
104х=1,248+1,56
104х=2,808
х=2,808:104
<span>х=0,027</span>
<span>6(а+1,5)-2,8а=</span>6а+9-2,8а=3,2а+9
3,2*1,5+9=4,8+9=13,8