x*0.4=3

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Solution for x*0.4=3 equation: 



x*0.4=3

We move all terms to the left:

x*0.4-(3)=0

Wy multiply elements

0.4x-3=0

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

0.4x=3

x=3/0.4

x=7+0.2/0.4

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