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19;361
0.441;1.5
(1/x+1)^x
(-x)^2+2*x+3 > 0
18;324
| (-56xy-54x^2)/7x | | x^2-6x-4y^2+40y=95 | | 8n+2-6-11=7+2n+8 | | A+10=12 | | 16x+23=15x+27 | | -6+3x=4+x | | x=-3*y | | a=49+6a | | 517=33+22w | | 23=-7n-3(1+2n) | | x/56= | | mx+na-nx=ma | | -31u=-992 | | x*56= | | x^2-6x-4y+40y=95 | | y=1/4(-4)-3 | | 5(-8m-1)=-45 | | b-3=9b+53 | | 3b-2/3=b-3/6 | | 6=x-3+7 | | -6=1+x-8x | | 6x-5=5x-1 | | 5x+13=13-8x | | 4.59+x=4.67 | | 3(2y-4)+2y+2=2y+7+y+8 | | a=49-6a | | 6x+1y=0 | | 16.31+x=22.12 | | 14x+10=9+-3x | | (Y+3)(y-4)= | | 1-7c-7c=15 | | 8.09+x=9.7 |