a+7+a+3=3a+9

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Solution for a+7+a+3=3a+9 equation: 



a+7+a+3=3a+9

We move all terms to the left:

a+7+a+3-(3a+9)=0

We add all the numbers together, and all the variables

2a-(3a+9)+10=0

We get rid of parentheses

2a-3a-9+10=0

We add all the numbers together, and all the variables

-1a+1=0

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

-a=-1

a=-1/-1

a=1

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