Oblicz :
1) 2x-(x+y)+2(3x+5)= ?
2) 3x +6/3-2(x+5)-x+6
3) 3x * (-4y)+12xy = ?
4) -2x * 3y * (-5z) = ?
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1) 2x-(x+y)+2(3x+5)=2x-x-y+6x+10=x-y+6x+10= 7x - y + 10
2) 3x +6/3-2(x+5)-x+6 = 3x+2-2x-10-x+6=-2
3) 3x * (-4y)+12xy = -12xy + 12xy = 0
4) -2x * 3y * (-5z) = 30xyz
1)2x-(x+y)+2(3x+5)=2x-x-y+6x+10=7x-y+10
2)3x+6/3-2(x+5)-x+6=3x+2-2x-10-x+6=-2
3)3x*(-4y)+12xy=-12xy+12xy=0
4)-2x*3y*(-5z)=30xyz