2,6(0,4x-1,4)=-3,9(1,2x-0,9)
2,6(0,4x-1,4)=-3,9(1,2x-0,9) 1,04x-3,64=-4,68x+3,51 1,04x+4,68x=3,51+3,64 5,72x=7,15 x=7,15:5,72 x=1,25