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)
z-(4/(-2)) = 13 // - 13
z-(4/(-2))-13 = 0
z-13+2 = 0
z-11 = 0 // + 11
z = 11
z = 11
| 36=2x^2-3x | | R*.07=142 | | 6x+17=-64 | | x+6y=180 | | 36=2x^2-6x | | 4p^2+23p+15=0 | | -12x-16=89 | | 2n/4n^1/2 | | (X-3)(X+6)= | | 2/3x-1/2x=-1/6x-2 | | 4x-6+x+6y=180 | | 3.2(0.5x+.8)=x-.7(3x-.25) | | 4X-(48/x^2) | | 3/7x=6y-3 | | -7x+15/6y=-x+1 | | 12m=4(5m+10) | | 11x+19y=29fory | | (5/8)(4/3) | | (6/5)/(6/7) | | (7/20)-(3/25) | | -8x^3-x^2-64x^2-8x+24x+3= | | (3/6)+(2/7) | | 4x^2+3x-23=5-6x | | (8)x/8=x | | (x/(x+1))-(4/(x-2))=2 | | -0.3x+1.13=-0.1x+0.73 | | R+.07=142 | | 110/240 | | (7-2i)(4-3i)= | | (5v-2)(6v+v)=0 | | 7(x-3)+x(x+4)=5 | | -5b+3(b+2)+4(b+1)=2 |