If it's not what You are looking for type in the equation solver your own equation and let us solve it.
4+z=20
We move all terms to the left:
4+z-(20)=0
We add all the numbers together, and all the variables
z-16=0
We move all terms containing z to the left, all other terms to the right
z=16
| 4x^2-10=198 | | 5x−9=61 | | -15-k/5=0 | | 96=12+d | | 7x-(3x+5)-8=0.5(8x+20)+5 | | 8(2t+1)-9t=9)=-52-8t | | 31(x+53)=56 | | y/3+3.5=5 | | 95=12d | | 7m+4=22-2m | | 7=3s-8 | | -15b-40=23b | | 6(x-7)=-80 | | 3x-1-3=5x+3 | | 4x-7=x+10x= | | 31 (x+53 )=56 | | 4x-6=2x+8, | | 7(2a-6)=70 | | 8w+1=49 | | 6m+8=41-5 | | 7=3s−8 | | 11x-4=-9 | | 31.4=6.28*r | | 3x-2.4=7.2 | | 4(4+x)=3(3+8) | | 10=x+9/2+3x+7/4 | | 2r+4+4r+8=26 | | 5(k+2)=-50 | | –12+2z=2 | | 3x-2x=25-11 | | 4(x+11)=48 | | 25x+4x=x |