78+2z=100

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Solution for 78+2z=100 equation: 



78+2z=100

We move all terms to the left:

78+2z-(100)=0

We add all the numbers together, and all the variables

2z-22=0

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

2z=22

z=22/2

z=11

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