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1)6:(-1,5)-4,6+5(2а-3)=
2) (-1,6с+0,4)-(0,5-0,8)с=
3) (2х-3у+4)-(3х-2у+4)=
4) 1-(1,5х-2)-4(0,5х-1,1=
1)6:(-1,5)-4,6+5(2а-3)=
2) (-1,6с+0,4)-(0,5-0,8)с=
3) (2х-3у+4)-(3х-2у+4)=
4) 1-(1,5х-2)-4(0,5х-1,1=
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2) (-1,6с+0,4)-(0,5-0,8)с=-1,6c+0,4-0,5c+0,8c=0,4-1,3c
3) (2х-3у+4)-(3х-2у+4)=2x-3y+4-3x+2y-4=-x-y
4) 1-(1,5х-2)-4(0,5х-1,1)=1-1,5x+2-2x+4,4=7,4-3,5x