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13/15+12/18 = 0
12/18+13/15 = 0
2/3+13/15 = 0
23/15 = 0
L <> R
| 12=z/12 | | -3/5x=-12/25 | | 14=x/13 | | 8x^2-48x+72=0 | | -4=t/13 | | 5x+10-3x=4x | | 8b-3d=65 | | h=-16t^2+1.6t+27 | | 6y^2(y^2+6y+9)=0 | | -6=a/-9 | | -6/7x=12/35 | | 3x/6+1+7 | | -5y/11 | | 3x/6+7+7 | | 144-7x=20x+21 | | 500000000=1.36x^2+27.8x+304 | | 7/11-6/18 | | -m/5+13=20 | | -99=-6y | | 5t-26=18x | | 3w-5w=16 | | 8d+3d+6d= | | x-8x=9 | | 0=-16t^2+40t+6.5 | | y^3+12y^3+36y=0 | | Y+9=-5 | | 7/10*9/19 | | -10x^2=50 | | -3/8-11=4 | | 8/21+8/21 | | 115-7x=11x+19 | | 12/7x=-2 |