If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(21*x)/52 = 0
21/52*x = 0 // : 21/52
x = 0
x = 0
| 6x+8=10x-4 | | X-18/2=5X | | 4a+2e=70 | | r^2-12+w+3wr-4tr= | | 4d^-4e^-1/2f^-4 | | 2x^3-5x^2-12x+27=0 | | 4x-5-2x=13 | | 5/8-2/4= | | 4/7a=14 | | 15-1/3x=14 | | 12-81= | | 4e+2a=1 | | 5x^2+3t-4=2t-1 | | 3y+10=3y+20 | | 64X^3+16X^2+4X-3=0 | | 4(X+3x)=58 | | 3p=6181-2q | | x/4-4/5=19/20 | | 2x-(x-5)=6-(x+1) | | 3p-3=27 | | 4(x-5)=6+2(x+3) | | 10x^2-9x-1368=0 | | q+100=400 | | 8x-14=7x+26 | | n(n-3)=7*(4) | | 13lnx=15 | | 28m=7 | | 5a+2(a-4)=27 | | (-4y^2-5y)+(2y^2+2y-2)= | | (8b/15a)(3a^4b^3/2b) | | 5(x+2)=6x+3-x+7 | | x+5+5=20 |