3x-78=30-x

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Solution for 3x-78=30-x equation: 



3x-78=30-x

We move all terms to the left:

3x-78-(30-x)=0

We add all the numbers together, and all the variables

3x-(-1x+30)-78=0

We get rid of parentheses

3x+1x-30-78=0

We add all the numbers together, and all the variables

4x-108=0

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

4x=108

x=108/4

x=27

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