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x in (-oo:+oo)
(2*x)/0.5 = 0
4*x = 0 // : 4
x = 0
x = 0
| ab+bc-bd= | | x^2+x^3=19 | | 9n*n-549n+7560=0 | | 10n=1150 | | 5(2x)=31 | | 4m^2n-5t= | | 191000+(191000-x)=177043.5 | | 10x-x^2-8=0 | | x+(0.15x)=203600 | | 16X^2+80X-300=0 | | 11y=19 | | x^3+3x^2+2x=2730 | | A^2-6a+10=0 | | 4y-3=6y^2-3 | | 3p(p-1)=2(1-p) | | 7+27x=88 | | 13d=52 | | 525=-0.5x^2+36x-87 | | 12x-10=4x+5 | | 2/5x-5≥3 | | 7-x/10≥12 | | 1.8b=9 | | 1/3p-n | | a-4.2=16.8 | | 3x^2-12+9=0 | | 7-8x/1012 | | 5y-3=2y+1 | | 4a+87b+34c=0 | | 30-8b=-2(1+8b) | | 15x+27=19-31x+8 | | (2/5)a=0 | | 3/4x=110 |