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(2*tan(x))/2
7/3-45
71/30
14930;130
3;4
| (2x^2-3x+1)(x^2-4x-3)= | | 3x+3x+25=31 | | 2(3x)=[.5(x+3+12)2] | | 11x+9=2x+63 | | (6x^2-2x)+(5x-7)= | | Ps+10v=a | | 7x-13=2x+22 | | -6s+7+3s=-27 | | x^2+12x=x^2+7x | | Z=vs | | 3x^2-8x=1 | | x^2+12=x^2+7 | | 1.3+0.6x=2.86+1.4x+0.2 | | -6+7+3s=-27 | | x^12+2=x^2+7 | | 3qw/q=25 | | 2(2x+1)=[.5(15+x-1)2] | | x^2+2=x^2+7 | | 19*5abc=8ab | | x+2(x+5)=(x+12)x | | 4y-6+y+53=5y+50-3y | | 6x-2(x-2)=4(x+1)+5 | | 4+2z-3=8z+9-5z | | w+6-32=-10 | | aq=5 | | 12(3y+1)=84 | | -3/n=6/n-1 | | 3s-23=-25+s | | 1-q=-99999999999999999/q | | 2fr-31a+15a= | | an=9n | | 2y-17=5+8y |