3x+4.5=21

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Solution for 3x+4.5=21 equation: 



3x+4.5=21

We move all terms to the left:

3x+4.5-(21)=0

We add all the numbers together, and all the variables

3x-16.5=0

We move all terms containing x to the left, all other terms to the right

3x=16.5

x=16.5/3

x=5+1/2

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