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2z/7+4=-1
We move all terms to the left:
2z/7+4-(-1)=0
We add all the numbers together, and all the variables
2z/7+5=0
We multiply all the terms by the denominator
2z+5*7=0
We add all the numbers together, and all the variables
2z+35=0
We move all terms containing z to the left, all other terms to the right
2z=-35
z=-35/2
z=-17+1/2
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