15=z+6+5

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Solution for 15=z+6+5 equation: 



15=z+6+5

We move all terms to the left:

15-(z+6+5)=0

We add all the numbers together, and all the variables

-(z+11)+15=0

We get rid of parentheses

-z-11+15=0

We add all the numbers together, and all the variables

-1z+4=0

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

-z=-4

z=-4/-1

z=+4

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