If it's not what You are looking for type in the equation solver your own equation and let us solve it.
z in (-oo:+oo)
3-10 = z/(-3) // - z/(-3)
3-(z/(-3))-10 = 0
1/3*z-7 = 0 // + 7
1/3*z = 7 // : 1/3
z = 7/1/3
z = 21
z = 21
| 36x^2-24x=131 | | 3p(p+2)=10 | | 3y+6=7y-10 | | 3y+6=7y-8 | | 12(5a)= | | 4r-7r+8+r= | | 13-4x=1+x | | 182=12x+14 | | 6a+6=5a-5 | | 2(x-14)+16-4x=28 | | (0.5)(x+6)(18)=(x+11)(6) | | 3(2x+7)+36+15x=-27 | | -4y-10=6y+60 | | 5=-9/-7+b | | -4-10=6y+60 | | 8x^2+30=0 | | a+2=100 | | -6x-5y=20 | | 8x-5-10x+7= | | a^2+b^2=676 | | 6Y^2-9Y-6=0 | | 7x-15*4=x | | -75-8x=23-x | | 15-14=x/-6 | | 6(7+9)+2(13-2x)=368 | | 6x-40=3x+23 | | -9-5=10x+8-9 | | 17x+13y=2 | | 2x-3.1=1 | | 3y+6+5y+17+2y+4y= | | r^2-25= | | 3(2h+1)-2(h-4)=24 |