2x+3=21-3

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Solution for 2x+3=21-3 equation: 



2x+3=21-3

We move all terms to the left:

2x+3-(21-3)=0

We add all the numbers together, and all the variables

2x+3-18=0

We add all the numbers together, and all the variables

2x-15=0

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

2x=15

x=15/2

x=7+1/2

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