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0.75x+-2=0.5
We move all terms to the left:
0.75x+-2-(0.5)=0
We add all the numbers together, and all the variables
0.75x-2.5=0
We move all terms containing x to the left, all other terms to the right
0.75x=2.5
x=2.5/0.75
x=3+0.25/0.75
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