30-15x+7x=12-4x

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Solution for 30-15x+7x=12-4x equation: 



30-15x+7x=12-4x

We move all terms to the left:

30-15x+7x-(12-4x)=0

We add all the numbers together, and all the variables

-15x+7x-(-4x+12)+30=0

We add all the numbers together, and all the variables

-8x-(-4x+12)+30=0

We get rid of parentheses

-8x+4x-12+30=0

We add all the numbers together, and all the variables

-4x+18=0

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

-4x=-18

x=-18/-4

x=4+1/2

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