x+x+15=x+30

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Solution for x+x+15=x+30 equation: 



x+x+15=x+30

We move all terms to the left:

x+x+15-(x+30)=0

We add all the numbers together, and all the variables

2x-(x+30)+15=0

We get rid of parentheses

2x-x-30+15=0

We add all the numbers together, and all the variables

x-15=0

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

x=15

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