3x-15=12x+75

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Solution for 3x-15=12x+75 equation: 



3x-15=12x+75

We move all terms to the left:

3x-15-(12x+75)=0

We get rid of parentheses

3x-12x-75-15=0

We add all the numbers together, and all the variables

-9x-90=0

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

-9x=90

x=90/-9

x=-10

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