3x+4=40-3x

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Solution for 3x+4=40-3x equation: 



3x+4=40-3x

We move all terms to the left:

3x+4-(40-3x)=0

We add all the numbers together, and all the variables

3x-(-3x+40)+4=0

We get rid of parentheses

3x+3x-40+4=0

We add all the numbers together, and all the variables

6x-36=0

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

6x=36

x=36/6

x=6

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