19=7z-1-2z

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Solution for 19=7z-1-2z equation: 



19=7z-1-2z

We move all terms to the left:

19-(7z-1-2z)=0

We add all the numbers together, and all the variables

-(5z-1)+19=0

We get rid of parentheses

-5z+1+19=0

We add all the numbers together, and all the variables

-5z+20=0

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

-5z=-20

z=-20/-5

z=+4

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