Question

2,6 (0,4х-1,4)=-3,9 (1,2х-0,9)

Answer 1

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