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Solving equation 5x ^ 2-10x = - 5
5x^2-10x=-5
x²－2x＝－1
x²－2x＋1=0
﹙x－1﹚²＝0
x－1=0
x=1
3 / 5x + 1 / 10x-1 / 5 = 5 / 6
3/5x+1/10x-1/5=5/6
6/10x+1/10x=1
7/10x=1
x=10/7
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