x3.9=12.4

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Solution for x3.9=12.4 equation:



x3.9=12.4
We move all terms to the left:
x3.9-(12.4)=0
We add all the numbers together, and all the variables
x3.9-12.4=0
We move all terms containing x to the left, all other terms to the right
x3.9=12.4
x=12.4/1
x=12.4

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