6+x=4x+15

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Solution for 6+x=4x+15 equation: 



6+x=4x+15

We move all terms to the left:

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

We get rid of parentheses

x-4x-15+6=0

We add all the numbers together, and all the variables

-3x-9=0

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

-3x=9

x=9/-3

x=-3

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