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69+420x=420+3003135x
We move all terms to the left:
69+420x-(420+3003135x)=0
We add all the numbers together, and all the variables
420x-(3003135x+420)+69=0
We get rid of parentheses
420x-3003135x-420+69=0
We add all the numbers together, and all the variables
-3002715x-351=0
We move all terms containing x to the left, all other terms to the right
-3002715x=351
x=351/-3002715
x=-39/333635
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