30+x=15+4x

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Solution for 30+x=15+4x equation: 



30+x=15+4x

We move all terms to the left:

30+x-(15+4x)=0

We add all the numbers together, and all the variables

x-(4x+15)+30=0

We get rid of parentheses

x-4x-15+30=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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