42x-3x=12-9x

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Solution for 42x-3x=12-9x equation: 



42x-3x=12-9x

We move all terms to the left:

42x-3x-(12-9x)=0

We add all the numbers together, and all the variables

42x-3x-(-9x+12)=0

We add all the numbers together, and all the variables

39x-(-9x+12)=0

We get rid of parentheses

39x+9x-12=0

We add all the numbers together, and all the variables

48x-12=0

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

48x=12

x=12/48

x=1/4

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