1x+7=3x+9

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Solution for 1x+7=3x+9 equation: 



1x+7=3x+9

We move all terms to the left:

1x+7-(3x+9)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

x-3x-9+7=0

We add all the numbers together, and all the variables

-2x-2=0

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

-2x=2

x=2/-2

x=-1

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