2 / 2-х = 7 / 4,5-4х
2/2-7/4,5-4х 2(4,5-4х)=7*(2-х) 9-8х=14-7х -8х+7х=14-9 -х=5 х=-5
2 / 2-х = 7 / 4,5-4х 2* (4.5-4х) = 7*(2-х) 9-8х = 14 - 7х х = -5