4+z+2=21-2

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Solution for 4+z+2=21-2 equation: 



4+z+2=21-2

We move all terms to the left:

4+z+2-(21-2)=0

We add all the numbers together, and all the variables

z+4+2-19=0

We add all the numbers together, and all the variables

z-13=0

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

z=13

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