3x+105-x=4x-12

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Solution for 3x+105-x=4x-12 equation: 



3x+105-x=4x-12

We move all terms to the left:

3x+105-x-(4x-12)=0

We add all the numbers together, and all the variables

2x-(4x-12)+105=0

We get rid of parentheses

2x-4x+12+105=0

We add all the numbers together, and all the variables

-2x+117=0

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

-2x=-117

x=-117/-2

x=58+1/2

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