3x+3.9=0.2x-4.5

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Solution for 3x+3.9=0.2x-4.5 equation: 



3x+3.9=0.2x-4.5

We move all terms to the left:

3x+3.9-(0.2x-4.5)=0

We get rid of parentheses

3x-0.2x+4.5+3.9=0

We add all the numbers together, and all the variables

2.8x+8.4=0

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

2.8x=-8.4

x=-8.4/2.8

x=-3+1.7763568394003E-15/2.8

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