15+3x=21+1

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Solution for 15+3x=21+1 equation: 



15+3x=21+1

We move all terms to the left:

15+3x-(21+1)=0

We add all the numbers together, and all the variables

3x+15-22=0

We add all the numbers together, and all the variables

3x-7=0

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

3x=7

x=7/3

x=2+1/3

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