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(1*(2/5))/3 = 0
(2/5*1)/3 = 0
2/5/3 = 0
2/15 = 0
L <> R
| 4/5*1/3 | | 6/7*9/1 | | 5/6*1/4 | | 1/21*7/11 | | 7/8*5/1 | | 1/5*1/4 | | 10/7*1/8 | | 5/7*14/5 | | 4/5*4/1 | | 4-2=3+5p | | 2n^2+13n+6=0 | | 19/15*5/8 | | 3xa+5xb= | | x/4=9/12 | | 19/15*4/3 | | 2(3x)=-1(x-2) | | 19/15*3/4 | | 25/3*6/5 | | 4/1*9/5 | | 5/6*5/1 | | 22/1*13/11 | | -3x^2+10x=8 | | 2/9*1/3 | | 10=4(3+b/2) | | 5/1*9/4 | | 4(3+2/2) | | 4(3+17/2) | | 5/1*4/9 | | 2/1*4/3 | | -3x^2-8x+10=0 | | 3/8*7/6 | | x^2+x+6= |