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)
(-21/5)*z = -33 // + 33
(-21/5)*z+33 = 0
33-21/5*z = 0 // - 33
-21/5*z = -33 // : -21/5
z = -33/(-21/5)
z = 55/7
z = 55/7
| 0=2x^2+3x+7 | | 0.5x+7.5-.25x=4.10 | | 12x(x^2+x-24)=0 | | -3(5y-9)+2(3y+9)= | | 12(x^2+x-24)=0 | | 0=-7x^2+6x+9 | | 5h-7=22 | | f(x)=2x^2+3x+7 | | X+2*2X+1=252 | | a-2b+8c-5d=18 | | log(8x+12)=1 | | f(x)=-7x^2+6x+9 | | 3(s-1)-(s-2)=22s | | x^2+21*21=37*37 | | -5y=10x+20 | | (4t^2+t)^2/(t-3)^2 | | 1.6x+1.6y=224 | | 4log(x+5)-6=-4 | | 7x+4x-6x-10=5 | | 11x+13y=5616 | | (x/5)+(1/2)=(2/3) | | 11x+13y-2736=0 | | (x+4)=14 | | f(0)=x^2-x+5 | | f(-5)=x^2-x+5 | | 3(4x+4)+6=7x+3 | | 35-11x=-4x | | f(6)=x^2-x+5 | | x^3+12x=100 | | 3+2i/4+3i | | x^6=665 | | 2a+4b-c+2d=-7 |