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a belongs to the empty set
| -9c+10=10-9c | | 8y+4c=1440 | | (8(3w+2))5=-3 | | 3j+2=10+2j | | 10p+9p=13 | | -9+10f=10f+7 | | 3r+4=4+3r | | 3k+6=-4+3k | | 3x+8=7x-13 | | 3(5j+2)-5=9(d+2)+1 | | -5w-3w=-8w | | 5-10u=-10u | | 2tan^2x=5tanx-2 | | 63=-21y | | 10-n=9-n | | -13-7=-3 | | sin(3x-10)=cos(2x+20) | | -3p=-9-4p | | -11+X=9 | | 0=4d-4d | | x+6.3=12.4 | | 9q-5=8q | | (2z-1)(3+z)=0 | | 4g=-72 | | 3x+2(4x-1)=3(x-5)-3 | | 0=-9+9w | | 4-10k=-10k+5 | | G-(-15)=2 | | 14.37+0.12=14.87-0.08x | | 27+x=35 | | -6+-12x=6-18x | | A/6-5=7 |