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2.20x+1.30(2x)=14.40
We move all terms to the left:
2.20x+1.30(2x)-(14.40)=0
We add all the numbers together, and all the variables
2.20x+1.302x-(14.4)=0
We add all the numbers together, and all the variables
3.502x-14.4=0
We move all terms containing x to the left, all other terms to the right
3.502x=14.4
x=14.4/3.502
x=4+0.392/3.502
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