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202.5777-x=77.2
We move all terms to the left:
202.5777-x-(77.2)=0
We add all the numbers together, and all the variables
-1x+125.3777=0
We move all terms containing x to the left, all other terms to the right
-x=-125.3777
x=-125.3777/-1
x=125+0.3777/1
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