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84/(-9) = 0
-28/3 = 0
L <> R
| 5x+6x=10 | | 0=9x^2+52x+100 | | 4=4(y+2) | | 2x+6x-81=63 | | 49x^3-18=9x-98x^2 | | 25x-38= | | 5x+60y=9 | | 3x-3(4x-4)=-60 | | -21x^2+4x+1=0 | | 4(2x+-3)=3+8x+-11 | | X/10=1/2/7 | | 2/3×3-10= | | 1500-35n= | | -5x-2=18 | | 1/3/4=1/4/x | | sec^2y+tan^2y=1-sen^4 | | 3x-12(4x-4)=-60 | | 1/2/4=x/5 | | x+6+x+6+x+6=3x+3x+3x+3x | | 4/7/x=6/7 | | 35n-1500= | | 3/4x-9=29 | | 1/13*4 | | 6a(4a)= | | 5/8=x/2/5 | | 2/3/x=5/6 | | 2(6a+4)=20-9a | | 3(2x+y)=2y+11 | | 4x^2-54x-126=0 | | 3h^2-5h-2=0 | | 0.22(x+4)=.2x+3.3 | | 7.5-6-4.5x=20.5 |