3z+7-z=10+z+9

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Solution for 3z+7-z=10+z+9 equation: 



3z+7-z=10+z+9

We move all terms to the left:

3z+7-z-(10+z+9)=0

We add all the numbers together, and all the variables

3z-z-(z+19)+7=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

2z-z-19+7=0

We add all the numbers together, and all the variables

z-12=0

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

z=12

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