3x-0.4=-7.6

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Solution for 3x-0.4=-7.6 equation: 



3x-0.4=-7.6

We move all terms to the left:

3x-0.4-(-7.6)=0

We add all the numbers together, and all the variables

3x+7.2=0

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

3x=-7.2

x=-7.2/3

x=-2+1/2.5

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