4x-15=45+x

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Solution for 4x-15=45+x equation: 



4x-15=45+x

We move all terms to the left:

4x-15-(45+x)=0

We add all the numbers together, and all the variables

4x-(x+45)-15=0

We get rid of parentheses

4x-x-45-15=0

We add all the numbers together, and all the variables

3x-60=0

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

3x=60

x=60/3

x=20

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