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2(x-1=x+1)
We move all terms to the left:
2(x-1-(x+1))=0
| 1a+3=11 | | 3-(4x-(5x-(6x-7)))=11 | | 11x-3x=40 | | b–4.3=8.48 | | -7-x=20 | | 2(x-1=x+1 | | 21=3c-15=17-c | | -2x+14=2(-x+7 | | 18=8=5y | | -12=-4+x/2 | | 3t-5=31 | | 18=18+5y | | 3t-5=5 | | (x-3)^2+4=20 | | 7x+2=7x-88 | | 5×-2y=5 | | x-5(x+4)=2(x-8)=8 | | x+x+x=1200 | | 5x+2,5=1,5x-1 | | 3+5v=8 | | 23=-4n-8n+17 | | 3+4x-7=4(x+2)+1 | | 18+10=35+3g | | 2.5x^2+30x+25=0 | | -56n-17=13 | | x+62=5x+26 | | 10x-20=-50 | | 13/6x+1/3=1/2x-11/2 | | 2(x+3)=54 | | x/11-8=7/22 | | (6x-5)+(12x-5)=180 | | 6-10x+15=4x+7 |