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x-x/2+280=550
We move all terms to the left:
x-x/2+280-(550)=0
We add all the numbers together, and all the variables
x-x/2-270=0
We multiply all the terms by the denominator
x*2-x-270*2=0
We add all the numbers together, and all the variables
-1x+x*2-540=0
Wy multiply elements
-1x+2x-540=0
We add all the numbers together, and all the variables
x-540=0
We move all terms containing x to the left, all other terms to the right
x=540
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