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5[2x-4(3x+1)]= -10x+20
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x=-1
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x-13=4[3x-4(x-2)]
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x=9
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3[6x-5(x-3)]=15-3(x-5)
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x= -5/2
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2x+3(x-3)=6[2x-3(x-5)]
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x=9
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x+4[3-2(x-1)]=5[x-3(2x-4)]+1
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x=41/18
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3-2x+4[3+5(x+1)]=10x-7
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x=-21/4
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5x −1= x -1− x −3
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x=9
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3x−2y=9 2x+5y=−13
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x=1, y=-3
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x1=4, x2=-6
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x2+2x-24=0
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x1=-3, x2=-5
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x2+8x+15=0
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x1=-2/7, x2=7
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7x2-47x-14=0
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x1=-16, x2=9
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x2+7x-144=0
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x1=5, x2=-12
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x2+7x-60=0
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x -5x=0
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x1=0, x2=5
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2x2-6x=0
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x1=0, x2=3
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2x2-18=0
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x=±3
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5x2+x=0
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x1=0, x2=-1/5
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x2=x
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x1=0, x2=2
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x +x=0
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x1=0, x2=-1
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4x2-1=0
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x=±1/2
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-x2+12x=0
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x1=0, x2=12
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x2-10x=0
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x1=0, x2=10
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9x2-4=0
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x=±2/3
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x4-5x2+4=0
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x=±1, x=±2
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x4-13x2+36=0
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x=±2, x=±3
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