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65=z+31
We move all terms to the left:
65-(z+31)=0
We get rid of parentheses
-z-31+65=0
We add all the numbers together, and all the variables
-1z+34=0
We move all terms containing z to the left, all other terms to the right
-z=-34
z=-34/-1
z=+34
| 65=z+31 | | 65=z+31 | | 65=z+31 | | 9^x/2=243 | | 9^x/2=243 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 65=z+31 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | 18=r/6 | | t/25=13 |