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2.5x=2.79=10.21
We move all terms to the left:
2.5x-(2.79)=0
We add all the numbers together, and all the variables
2.5x-2.79=0
We move all terms containing x to the left, all other terms to the right
2.5x=2.79
x=2.79/2.5
x=1+0.29/2.5
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