mzamina96 1) 5,6x-2x-0.7x=7-2.65
    2.9x=4.35
    x=1.5

2) (1.9-x)=2.136:7.12
     1.9-x=0.3
      x=1.6

mrdimka93 1) 5.6x-2x-0.7x+2.65=7
2.9x=4.35
x=1.5
2) 2.136:(1.9-x)=7.12
2.136=7.12(1.9-x)
2.136=13.528-7.12x
7.12x=11.392
x=1.6