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2.99x+1.4=13.55
We move all terms to the left:
2.99x+1.4-(13.55)=0
We add all the numbers together, and all the variables
2.99x-12.15=0
We move all terms containing x to the left, all other terms to the right
2.99x=12.15
x=12.15/2.99
x=4+0.19/2.99
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