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1.05(2.05x+4)=5
We move all terms to the left:
1.05(2.05x+4)-(5)=0
We multiply parentheses
2.1x+4.2-5=0
We add all the numbers together, and all the variables
2.1x-0.8=0
We move all terms containing x to the left, all other terms to the right
2.1x=0.8
x=0.8/2.1
x=0.8/2.1
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