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x+(200-1.5x)/2=400
We move all terms to the left:
x+(200-1.5x)/2-(400)=0
We add all the numbers together, and all the variables
x+(-1.5x+200)/2-400=0
We multiply all the terms by the denominator
x*2+(-1.5x+200)-400*2=0
We add all the numbers together, and all the variables
x*2+(-1.5x+200)-800=0
Wy multiply elements
2x+(-1.5x+200)-800=0
We get rid of parentheses
2x-1.5x+200-800=0
We add all the numbers together, and all the variables
0.5x-600=0
We move all terms containing x to the left, all other terms to the right
0.5x=600
x=600/0.5
x=1200
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