3*x=6.9

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Solution for 3*x=6.9 equation: 



3*x=6.9

We move all terms to the left:

3*x-(6.9)=0

We add all the numbers together, and all the variables

3x-6.9=0

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

3x=6.9

x=6.9/3

x=2+0.9/3

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