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16-x/7=31
We move all terms to the left:
16-x/7-(31)=0
We add all the numbers together, and all the variables
-x/7-15=0
We multiply all the terms by the denominator
-x-15*7=0
We add all the numbers together, and all the variables
-1x-105=0
We move all terms containing x to the left, all other terms to the right
-x=105
x=105/-1
x=-105
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