If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5z-4z=-9
We move all terms to the left:
5z-4z-(-9)=0
We add all the numbers together, and all the variables
z+9=0
We move all terms containing z to the left, all other terms to the right
z=-9
| 8x+1-4x/9=7 | | -6=s-11/3 | | -x+20=136 | | 2(6y-1)=22 | | 4(2p-3)=2(4p-6) | | -75=6s-3 | | -3x^2-8/17*x=0 | | 5(n+6)=2n.3 | | 6/9m-1/9=5/36 | | -3x2-817x=0; | | 5(b+2)=5b-10 | | 35r^2=-17r-2 | | 49=-7p+14 | | 3/8p-8=-23 | | 90=-10(b-5) | | (6x−12)+(8x−4)=180 | | 8x-(-40)=16 | | 5x+5=61 | | 9x2−8x−2=0 | | 18x+8=18x-7 | | 4-8s=s+13 | | 19-c=2 | | 99=9(10+w) | | 500-5x=10x-100 | | 12y+26=+110 | | 33=3(b+7) | | 15-2-3-x4+5=800 | | (8x-4)= | | x+4/3=63x+4 =6 | | 4+9e=8e+14 | | 7(2x-10)=21 | | t4+8=12 |