x+x+x+7=x+19

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Solution for x+x+x+7=x+19 equation: 



x+x+x+7=x+19

We move all terms to the left:

x+x+x+7-(x+19)=0

We add all the numbers together, and all the variables

3x-(x+19)+7=0

We get rid of parentheses

3x-x-19+7=0

We add all the numbers together, and all the variables

2x-12=0

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

2x=12

x=12/2

x=6

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