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2-(1/(-1))-1 = 0
1-1+2 = 0
0+2 = 0
2 = 0
L <> R
| 4x+2(5x-4)=17x | | -5+k=-9 | | 6m/3=18 | | -10g^2-54g+130=0 | | l/36=5 | | 180=50-4x | | 7n+3=25 | | 13/14×7/10 | | 3x-2x-1=2x-2 | | 12x+15-(3x)-(5)=100 | | -4=r-6 | | f/36=5 | | 15-v=10 | | 7x-2+6x=6x | | 27=3c-3(6-2x) | | 36/e=f | | 25u^2=10u-1 | | -4g=28 | | 12.50+4.75x=13+4x | | 8x+20y=472 | | 17=3y+5y+9 | | 310=-10+7m | | 13=j/8 | | 6p^2-27p-56=-2 | | 12.50+4.75=13+4x | | -16(-1-3x)=82+15x | | R/2.6=-1.2 | | (5y+9)+3y=17 | | x=16x-13 | | 25y=4/15 | | 8-(2a+7)=a+6 | | 27x^4-6=0 |