3x+2+0.4=-x

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Solution for 3x+2+0.4=-x equation: 



3x+2+0.4=-x

We move all terms to the left:

3x+2+0.4-(-x)=0

We add all the numbers together, and all the variables

3x-(-1x)+2+0.4=0

We add all the numbers together, and all the variables

3x-(-1x)+2.4=0

We get rid of parentheses

3x+1x+2.4=0

We add all the numbers together, and all the variables

4x+2.4=0

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

4x=-2.4

x=-2.4/4

x=-1/1.6666666666667

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