If it's not what You are looking for type in the equation solver your own equation and let us solve it.
a in (-oo:+oo)
3*a-(5/7) = 0
3*a-5/7 = 0
3*a-5/7 = 0 // + 5/7
3*a = 5/7 // : 3
a = 5/7/3
a = 5/21
a = 5/21
| 1/5(4+y)=y | | 10a^2+29a-21=0 | | (3+4i)+(7-2i)=0 | | .75xd=18 | | 3/8x=22 | | 85+8x=109+6x | | .75xd=14 | | 3u+7=10u-4 | | 4p^2a+9pa+2a= | | 9*3/5=8/11 | | -4(4y-9)+2(2y+7)= | | -4(X-1)+12X-10-2X+25=20 | | 40=3(x+9)-8x | | 4x/17= | | Y^2=1/49 | | 6X-2(4X+4)+18=2 | | x^4-x^2-720=0 | | 10+5(2X-5)-8X=-5 | | 6m-5=9m-13 | | y+9=15 | | 6n+3-5n=2n-7 | | 2s-7=-25+2(7s-3) | | 69(2x-1)= | | -2+14u+3=8u+27 | | 6y(3y+9)=17 | | 10w=2x+9-x | | 5x-10=4x+14 | | 0.4(x-5)=.2(10-12x)+x | | (z^-5/2z^-1)^3 | | 5(y+1)=-4 | | 231=8s+7-8(7-4) | | 16x-3.4x+2=0 |