1.4(x-6)=7(4x+1.2) 2.6(0.4x-1.4)=-3,9(1,2x-0,9)

-1.4(x-6)=7(4x+1.2)
-1,4х+8,4=28х+8,4
-1,4х-28х=8,4-8,4
-29,4х=0
х=0

 2.6(0.4x-1.4)=-3,9(1,2x-0,9)
1,04х-3,64=-4,68х+3,51
1,04х+4,68х=3,51+3,64
5,72х=7,15
х=7,15:5,72
х=1,25