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900-100x=200+150x
We move all terms to the left:
900-100x-(200+150x)=0
We add all the numbers together, and all the variables
-100x-(150x+200)+900=0
We get rid of parentheses
-100x-150x-200+900=0
We add all the numbers together, and all the variables
-250x+700=0
We move all terms containing x to the left, all other terms to the right
-250x=-700
x=-700/-250
x=2+4/5
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