3x+8+4x=12-3x

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Solution for 3x+8+4x=12-3x equation: 



3x+8+4x=12-3x

We move all terms to the left:

3x+8+4x-(12-3x)=0

We add all the numbers together, and all the variables

3x+4x-(-3x+12)+8=0

We add all the numbers together, and all the variables

7x-(-3x+12)+8=0

We get rid of parentheses

7x+3x-12+8=0

We add all the numbers together, and all the variables

10x-4=0

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

10x=4

x=4/10

x=2/5

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