(×+5,5)-7,9=12,35 , (×+105,01)+0,09=2,50
Х+5,5-7,9=12,35 х-2,4=12,35 х=12,35+2,4 х=14,75
1) x+5.5-7.9=12.35 x=12.35+2.4 x=14.75 2) x+105.1=2.5 x=2.5-105.1 x=-102.6