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3/8+z=7/8
We move all terms to the left:
3/8+z-(7/8)=0
We add all the numbers together, and all the variables
z+3/8-(+7/8)=0
We get rid of parentheses
z+3/8-7/8=0
We multiply all the terms by the denominator
z*8+3-7=0
We add all the numbers together, and all the variables
z*8-4=0
Wy multiply elements
8z-4=0
We move all terms containing z to the left, all other terms to the right
8z=4
z=4/8
z=1/2
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