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12345-x=69.420
We move all terms to the left:
12345-x-(69.420)=0
We add all the numbers together, and all the variables
-x+12345-(69.42)=0
We add all the numbers together, and all the variables
-1x+12275.58=0
We move all terms containing x to the left, all other terms to the right
-x=-12275.58
x=-12275.58/-1
x=12275+0.57999999999993/1
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