2X+(0.4x)=280

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Solution for 2X+(0.4x)=280 equation: 



2X+(0.4X)=280

We move all terms to the left:

2X+(0.4X)-(280)=0

We add all the numbers together, and all the variables

2X+(+0.4X)-280=0

We get rid of parentheses

2X+0.4X-280=0

We add all the numbers together, and all the variables

2.4X-280=0

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

2.4X=280

X=280/2.4

X=116+1/1.5

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