2x+15=30-x

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Solution for 2x+15=30-x equation: 



2x+15=30-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x-(-1x+30)+15=0

We get rid of parentheses

2x+1x-30+15=0

We add all the numbers together, and all the variables

3x-15=0

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

3x=15

x=15/3

x=5

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