Помогите пожалуйста.Уравнения.
1) 3х-х+5х=2,1
2) х+1,2х-3,6=-7
3) 3y-11=1-2y
4) 2(y+2)=-3(y-1)
1) 3х-х+5х=2,1
2) х+1,2х-3,6=-7
3) 3y-11=1-2y
4) 2(y+2)=-3(y-1)
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Answers & Comments
х+1,2х-3,6=-7 2,2x = -3,4 x = - 1,5(45)
3y-11=1-2y 5y = 12 y = 2,4
2(y+2)=-3(y-1) 2y + 4 = 3y - 3 7 = y
х=2,1:7
х=0,3