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900=5x+3
We move all terms to the left:
900-(5x+3)=0
We get rid of parentheses
-5x-3+900=0
We add all the numbers together, and all the variables
-5x+897=0
We move all terms containing x to the left, all other terms to the right
-5x=-897
x=-897/-5
x=179+2/5
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