x+.4x=2.80

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Solution for x+.4x=2.80 equation: 



x+.4x=2.80

We move all terms to the left:

x+.4x-(2.80)=0

We add all the numbers together, and all the variables

x+.4x-(2.8)=0

We add all the numbers together, and all the variables

1.4x-2.8=0

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

1.4x=2.8

x=2.8/1.4

x=2

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