20z+8z-20z+13z-15z-7=13

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Solution for 20z+8z-20z+13z-15z-7=13 equation: 



20z+8z-20z+13z-15z-7=13

We move all terms to the left:

20z+8z-20z+13z-15z-7-(13)=0

We add all the numbers together, and all the variables

6z-20=0

We move all terms containing z to the left, all other terms to the right

6z=20

z=20/6

z=3+1/3

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