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x in (-oo:+oo)
c*((9*x)/15) = 0
3/5*c*x = 0 // : 3/5*c
x = 0
x = 0
| x^2+3x-2548=0 | | 1/7x-(x-5/6)=1/42(x-6) | | .23x+37x+4=24 | | x+4x+(x-1)=11 | | 9m+14=95 | | 10y-4=136 | | 8m-15=34 | | N=180x | | =a-0.4a | | C+36=20+2 | | =a-0.3a | | x*x*y=175 | | 2xy=175 | | 7*x=((10-x)/4)*9 | | 6x^2-3x=4 | | 5y+6=3y+20 | | 52-x^3+x=10 | | 52-x^3+x=42 | | 66.40+x=y | | x2/5=w-y | | (2x-2000*2)=5000 | | 8x-14000=5000 | | 4x-2000=5000 | | -5/2=1/5x-7/3 | | (x-1)(x+2)=15 | | (x-2)(x+3)(x-3)(x+4)=40 | | 19-6x=21-9x | | 6.1*5+x*4=6.5*9 | | 9x+5=-58 | | 2w+3-3=1 | | (5t-2)-1= | | 4999.3=40 |