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2.5x+76.5=79
We move all terms to the left:
2.5x+76.5-(79)=0
We add all the numbers together, and all the variables
2.5x-2.5=0
We move all terms containing x to the left, all other terms to the right
2.5x=2.5
x=2.5/2.5
x=1
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