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4z/7+5=4
We move all terms to the left:
4z/7+5-(4)=0
We add all the numbers together, and all the variables
4z/7+1=0
We multiply all the terms by the denominator
4z+1*7=0
We add all the numbers together, and all the variables
4z+7=0
We move all terms containing z to the left, all other terms to the right
4z=-7
z=-7/4
z=-1+3/4
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