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300-2x+4(25)=3x-50
We move all terms to the left:
300-2x+4(25)-(3x-50)=0
We add all the numbers together, and all the variables
-2x-(3x-50)+725=0
We get rid of parentheses
-2x-3x+50+725=0
We add all the numbers together, and all the variables
-5x+775=0
We move all terms containing x to the left, all other terms to the right
-5x=-775
x=-775/-5
x=+155
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