1.7 х+2.8=1.9х-1.2 помогите плийз
сек
1.7х -1.9х = -1.2 -2.8 -0.2х = -4х= -4 : (-0.2 )х=20
1.7x-1.9x=-1.2-2.8 -0.2x=-4 x=20
БОЛЬШОЕ спс
1.7х-1.9х=-1,2-2.8 -0,2х=4 Х=-20
0,2х=-4
х=20